Config API, Part II

This patch completes the implementation of the API, making the entire MMGen
code base usable as a library for external projects.  A usage example can be
found in the script `examples/coin-daemon-info.py`.

Testing:

    $ test/test.py -e coin_daemon_info

examples/coin-daemon-info.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+#
+# mmgen = Multi-Mode GENerator, a command-line cryptocurrency wallet
+# Copyright (C)2013-2023 The MMGen Project <mmgen@tuta.io>
+# Licensed under the GNU General Public License, Version 3:
+#   https://www.gnu.org/licenses
+# Public project repositories:
+#   https://github.com/mmgen/mmgen
+#   https://gitlab.com/mmgen/mmgen
+
+"""
+examples/coin-daemon-info.py:
+    Get info about multiple running coin daemons.
+    Demonstrates use of the MMGen Config API.
+"""
+
+# Instructions
+#
+#  Testing mode:
+#
+#   1) From the MMGen repository root, start the mainnet test suite daemons as follows
+#      (note that openethereum is the default testing daemon for ETH):
+#
+#       test/start-coin-daemons.py btc ltc eth
+#
+#   2) Then run the script as follows:
+#
+#       PYTHONPATH=. MMGEN_TEST_SUITE=1 examples/coin-daemon-info.py btc ltc eth
+#
+#  Live mode:
+#
+#   1) Start up one or more of bitcoind, litecoind or geth with the standard mainnet ports
+#      and datadirs.  For geth, the options ‘--http --http.api=eth,web3’ are required.
+#
+#   2) Then run the script as follows:
+#
+#       PYTHONPATH=. examples/coin-daemon-info.py btc ltc eth
+
+import sys,os,asyncio
+
+from mmgen.exception import SocketError
+from mmgen.cfg import Config
+from mmgen.rpc import rpc_init
+from mmgen.util import make_timestr
+
+async def get_rpc(cfg):
+	try:
+		return await rpc_init(cfg)
+	except SocketError as e:
+		return False
+
+async def main(coins):
+
+	rpcs = {}
+	cfgs = {}
+	test_suite = os.getenv('MMGEN_TEST_SUITE')
+	base_cfg = Config({'pager':True})
+
+	for coin in coins:
+		cfg_in = {
+			'coin': coin,
+			'test_suite': test_suite,
+		}
+		if coin == 'eth' and not test_suite:
+			cfg_in.update({'daemon_id': 'geth'})
+		cfgs[coin] = Config(cfg_in)
+		rpcs[coin] = await get_rpc(cfgs[coin])
+
+	def gen_output():
+		fs = '{:4} {:7} {:6} {:<5} {:<8} {:30} {:13} {:23} {}'
+		yield fs.format('Coin','Network','Status','Port','Chain','Latest Block','Daemon','Version','Datadir')
+		for coin,rpc in rpcs.items():
+			info = ('Down','-','-','-','-','-','-') if rpc is False else (
+				'Up',
+				rpc.port,
+				rpc.chain,
+				'{:<8} [{}]'.format(rpc.blockcount, make_timestr(rpc.cur_date)),
+				rpc.daemon.coind_name,
+				rpc.daemon_version_str,
+				rpc.daemon.datadir
+			)
+			yield fs.format( coin.upper(), cfgs[coin].network, *info )
+
+	base_cfg._util.stdout_or_pager('\n'.join(gen_output()))
+
+all_coins = ('btc', 'ltc', 'eth')
+
+coins = sys.argv[1:]
+
+if coins and all(coin in all_coins for coin in coins):
+	asyncio.run(main(coins))
+else:
+	print(f'You must supply one or more of the following coins on the command line:\n  {all_coins}')
+	sys.exit(1)

mmgen/cfg.py

@@ -177,6 +177,7 @@ class Config(Lockable):
 	force_color     = False # placeholder
 	force_256_color = False
 	scroll          = False
+	pager           = False
 	columns         = 0
 	color = bool(
 		( sys.stdout.isatty() and not os.getenv('MMGEN_TEST_SUITE_PEXPECT') ) or
@@ -216,37 +217,14 @@ class Config(Lockable):
 
 	mnemonic_entry_modes = {}
 
-	# placeholders:
+	# external use:
+	_opts  = None
 	_proto = None
-	pager = False
-
-	# 'long' opts (subset of common_opts_data):
-	_common_opts = (
-		'accept_defaults',
-		'aiohttp_rpc_queue_len',
-		'bob',
-		'alice',
-		'carol',
-		'coin',
-		'color',
-		'columns',
-		'daemon_data_dir',
-		'daemon_id',
-		'force_256_color',
-		'http_timeout',
-		'ignore_daemon_version',
-		'no_license',
-		'regtest',
-		'rpc_host',
-		'rpc_password',
-		'rpc_port',
-		'rpc_user',
-		'scroll',
-		'testnet',
-		'token' )
 
-	# opts not in _common_opts but required to be set during opts initialization
-	_init_opts = ('show_hash_presets','yes','verbose')
+	# internal use:
+	_data_dir_root_override = None
+	_use_cfg_file           = False
+	_use_env                = False
 
 	_incompatible_opts = (
 		('help','longhelp'),
@@ -355,6 +333,7 @@ class Config(Lockable):
 		'vsize_adj': float,
 	}
 
+	# test suite:
 	err_disp_timeout   = 0.7
 	short_disp_timeout = 0.3
 	stdin_tty          = sys.stdin.isatty()
@@ -410,7 +389,6 @@ class Config(Lockable):
 			self,
 			cfg          = None,
 			opts_data    = None,
-			add_opts     = None,
 			init_opts    = None,
 			opt_filter   = None,
 			parse_only   = False,
@@ -420,23 +398,490 @@ class Config(Lockable):
 			do_post_init = False,
 			process_opts = False ):
 
+		# Step 1: get user-supplied configuration data from a) command line, or b) first argument
+		#         to constructor; save to self._uopts:
 		if opts_data or parsed_opts or process_opts:
-
-			import mmgen.opts as opts
-
-			self._opts = opts
-
-			opts.init(
+			assert cfg is None
+			from mmgen.opts import UserOpts
+			UserOpts(
 				cfg          = self,
 				opts_data    = opts_data,
-				add_opts     = add_opts,
 				init_opts    = init_opts,
 				opt_filter   = opt_filter,
 				parse_only   = parse_only,
-				parsed_opts  = parsed_opts,
-				need_proto   = need_proto,
-				need_amt     = need_amt,
-				do_post_init = do_post_init )
+				parsed_opts  = parsed_opts )
+			desc = 'command-line option'
+		else:
+			self._uopts = {} if cfg is None else cfg
+			desc = 'configuration option'
+
+		if parse_only and not any(k in self._uopts for k in ['help','longhelp']):
+			return
+
+		# Step 2: set cfg from user-supplied data, skipping auto opts; set type from corresponding
+		#         class attribute, if it exists:
+		auto_opts = tuple(self._autoset_opts) + tuple(self._auto_typeset_opts)
+		for key,val in self._uopts.items():
+			if key not in auto_opts:
+				setattr(self, key, set_for_type(key, val, getattr(self,key), desc) if hasattr(self,key) else val)
+
+		# Step 3: set cfg from environment, skipping already-set opts; save names set from environment:
+		env_cfg = tuple(self._set_cfg_from_env()) if self._use_env else ()
+
+		from .term import init_term
+		init_term(self) # requires ‘hold_protect_disable’ (set from env)
+
+		from .fileutil import check_or_create_dir
+		check_or_create_dir(self.data_dir_root)
+
+		from .util import wrap_ripemd160
+		wrap_ripemd160() # ripemd160 required by mmgen_cfg_file() in _set_cfg_from_cfg_file()
+
+		# Step 4: set cfg from cfgfile, skipping already-set opts and auto opts; save auto opts to be set:
+		#         (cfgfile.py requires ‘data_dir_root’, ‘test_suite_cfgtest’)
+		cfgfile_opts = self._set_cfg_from_cfg_file( env_cfg, need_proto )
+
+		# Step 5: set autoset opts from user-supplied data, cfgfile data, or default values, in that order:
+		self._set_autoset_opts( cfgfile_opts.autoset )
+
+		# Step 6: set auto typeset opts from user-supplied data or cfgfile data, in that order:
+		self._set_auto_typeset_opts( cfgfile_opts.auto_typeset )
+
+		if self.regtest or self.bob or self.alice or self.carol or gc.prog_name == 'mmgen-regtest':
+			self.network = 'regtest'
+			self.regtest_user = 'bob' if self.bob else 'alice' if self.alice else 'carol' if self.carol else None
+		else:
+			self.network = 'testnet' if self.testnet else 'mainnet'
+
+		self.coin = self.coin.upper()
+		self.token = self.token.upper() or None
+
+		# self.color is finalized, so initialize color:
+		if self.color: # MMGEN_DISABLE_COLOR sets this to False
+			from .color import init_color
+			init_color(num_colors=256 if self.force_256_color else 'auto')
+
+		self._die_on_incompatible_opts()
+
+		check_or_create_dir(self.data_dir)
+
+		if self.debug and gc.prog_name != 'test.py':
+			self.verbose = True
+			self.quiet = False
+
+		if self.debug_opts:
+			opt_postproc_debug(self)
+
+		from .util import Util
+		self._util = Util(self)
+
+		self._lock()
+
+		if need_proto:
+			from .protocol import warn_trustlevel,init_proto_from_cfg
+			warn_trustlevel(self)
+			# requires the default-to-none behavior, so do after the lock:
+			self._proto = init_proto_from_cfg(self,need_amt=need_amt)
+
+		if self._opts and not do_post_init:
+			self._opts.init_bottom(self)
+
+		# Check user-set opts without modifying them
+		check_usr_opts(self,self._uopts)
+
+	def _set_cfg_from_env(self):
+		for name,val in ((k,v) for k,v in os.environ.items() if k.startswith('MMGEN_')):
+			if name == 'MMGEN_DEBUG_ALL':
+				continue
+			elif name in self._env_opts:
+				if val: # ignore empty string values; string value of '0' or 'false' sets variable to False
+					disable = name.startswith('MMGEN_DISABLE_')
+					gname = name[(6,14)[disable]:].lower()
+					if gname in self._uopts: # don’t touch attr if already set on cmdline
+						continue
+					elif hasattr(self,gname):
+						setattr(
+							self,
+							gname,
+							set_for_type( name, val, getattr(self,gname), 'environment var', invert_bool=disable ))
+						yield gname
+					else:
+						raise ValueError(f'Name {gname!r} not present in globals')
+			else:
+				raise ValueError(f'{name!r} is not a valid MMGen environment variable')
+
+	def _set_cfg_from_cfg_file(
+			self,
+			env_cfg,
+			need_proto ):
+
+		_ret = namedtuple('cfgfile_opts',['autoset','auto_typeset'])
+
+		if not self._use_cfg_file:
+			return _ret( {}, {} )
+
+		# check for changes in system template file (term must be initialized)
+		from .cfgfile import mmgen_cfg_file
+		mmgen_cfg_file(self,'sample')
+
+		ucfg = mmgen_cfg_file(self,'usr')
+
+		if need_proto:
+			from .protocol import init_proto
+
+		autoset_opts = {}
+		auto_typeset_opts = {}
+		already_set = tuple(self._uopts) + env_cfg
+
+		for d in ucfg.get_lines():
+			if d.name in self._cfg_file_opts:
+				ns = d.name.split('_')
+				if ns[0] in gc.core_coins:
+					if not need_proto:
+						continue
+					nse,tn = (
+						(ns[2:],ns[1]=='testnet') if len(ns) > 2 and ns[1] in ('mainnet','testnet') else
+						(ns[1:],False)
+					)
+					cls = type(init_proto( self, ns[0], tn, need_amt=True )) # no instance yet, so override _class_ attr
+					attr = '_'.join(nse)
+				else:
+					cls = self
+					attr = d.name
+				refval = getattr(cls,attr)
+				val = ucfg.parse_value(d.value,refval)
+				if not val:
+					die( 'CfgFileParseError', f'Parse error in file {ucfg.fn!r}, line {d.lineno}' )
+				val_conv = set_for_type( attr, val, refval, 'configuration file option', src=ucfg.fn )
+				if not attr in already_set:
+					setattr(cls,attr,val_conv)
+			elif d.name in self._autoset_opts:
+				autoset_opts[d.name] = d.value
+			elif d.name in self._auto_typeset_opts:
+				auto_typeset_opts[d.name] = d.value
+			else:
+				die( 'CfgFileParseError', f'{d.name!r}: unrecognized option in {ucfg.fn!r}, line {d.lineno}' )
+
+		return _ret( autoset_opts, auto_typeset_opts )
+
+	def _set_autoset_opts(self,cfgfile_autoset_opts):
+
+		def get_autoset_opt(key,val,src):
+
+			def die_on_err(desc):
+				from .util import fmt_list
+				die(
+					'UserOptError',
+					'{a!r}: invalid {b} (not {c}: {d})'.format(
+						a = val,
+						b = {
+							'cmdline': 'parameter for option --{}'.format(key.replace('_','-')),
+							'cfgfile': 'value for cfg file option {!r}'.format(key)
+						}[src],
+						c = desc,
+						d = fmt_list(data.choices) ))
+
+			class opt_type:
+
+				def nocase_str():
+					if val.lower() in data.choices:
+						return val.lower()
+					else:
+						die_on_err('one of')
+
+				def nocase_pfx():
+					cs = [s for s in data.choices if s.startswith(val.lower())]
+					if len(cs) == 1:
+						return cs[0]
+					else:
+						die_on_err('unique substring of')
+
+			data = self._autoset_opts[key]
+
+			return getattr(opt_type,data.type)()
+
+		# Check autoset opts, setting if unset
+		for key in self._autoset_opts:
+
+			assert not hasattr(self,key), f'autoset opt {key!r} is already set, but it shouldn’t be!'
+
+			if key in self._uopts:
+				val,src = (self._uopts[key],'cmdline')
+			elif key in cfgfile_autoset_opts:
+				val,src = (cfgfile_autoset_opts[key],'cfgfile')
+			else:
+				val = None
 
-			if do_post_init:
-				self._post_init = opts.post_init
+			if val is None:
+				setattr(self, key, self._autoset_opts[key].choices[0])
+			else:
+				setattr(self, key, get_autoset_opt(key,val,src=src))
+
+	def _set_auto_typeset_opts(self,cfgfile_auto_typeset_opts):
+
+		def do_set(key,val,ref_type):
+			assert not hasattr(self,key), f'{key!r} is in cfg!'
+			setattr(self,key,None if val is None else ref_type(val))
+
+		for key,ref_type in self._auto_typeset_opts.items():
+			if key in self._uopts:
+				do_set(key, self._uopts[key], ref_type)
+			elif key in cfgfile_auto_typeset_opts:
+				do_set(key, cfgfile_auto_typeset_opts[key], ref_type)
+
+	def _post_init(self):
+		return self._opts.init_bottom(self)
+
+	def _die_on_incompatible_opts(self):
+		for group in self._incompatible_opts:
+			bad = [k for k in self.__dict__ if k in group and getattr(self,k) != None]
+			if len(bad) > 1:
+				die(1,'Conflicting options: {}'.format(', '.join(map(fmt_opt,bad))))
+
+def check_usr_opts(cfg,usr_opts): # Raises an exception if any check fails
+
+	def opt_splits(val,sep,n,desc):
+		sepword = 'comma' if sep == ',' else 'colon' if sep == ':' else repr(sep)
+		try:
+			l = val.split(sep)
+		except:
+			die( 'UserOptError', f'{val!r}: invalid {desc} (not {sepword}-separated list)' )
+
+		if len(l) != n:
+			die( 'UserOptError', f'{val!r}: invalid {desc} ({n} {sepword}-separated items required)' )
+
+	def opt_compares(val,op_str,target,desc,desc2=''):
+		import operator as o
+		op_f = { '<':o.lt, '<=':o.le, '>':o.gt, '>=':o.ge, '=':o.eq }[op_str]
+		if not op_f(val,target):
+			if desc2:
+				desc2 += ' '
+			die( 'UserOptError', f'{val}: invalid {desc} ({desc2}not {op_str} {target})' )
+
+	def opt_is_int(val,desc):
+		if not is_int(val):
+			die( 'UserOptError', f'{val!r}: invalid {desc} (not an integer)' )
+
+	def opt_is_float(val,desc):
+		try:
+			float(val)
+		except:
+			die( 'UserOptError', f'{val!r}: invalid {desc} (not a floating-point number)' )
+
+	def opt_is_in_list(val,tlist,desc):
+		if val not in tlist:
+			q,sep = (('',','),("'","','"))[type(tlist[0]) == str]
+			die( 'UserOptError', '{q}{v}{q}: invalid {w}\nValid choices: {q}{o}{q}'.format(
+				v = val,
+				w = desc,
+				q = q,
+				o = sep.join(map(str,sorted(tlist))) ))
+
+	def opt_unrecognized(key,val,desc='value'):
+		die( 'UserOptError', f'{val!r}: unrecognized {desc} for option {fmt_opt(key)!r}' )
+
+	def opt_display(key,val='',beg='For selected',end=':\n'):
+		from .util import msg_r
+		msg_r('{} option {!r}{}'.format(
+			beg,
+			f'{fmt_opt(key)}={val}' if val else fmt_opt(key),
+			end ))
+
+	def chk_in_fmt(key,val,desc):
+		from .wallet import get_wallet_data
+		wd = get_wallet_data(fmt_code=val)
+		if not wd:
+			opt_unrecognized(key,val)
+		if key == 'out_fmt':
+			p = 'hidden_incog_output_params'
+
+			if wd.type == 'incog_hidden' and not getattr(cfg,p):
+				die( 'UserOptError',
+					'Hidden incog format output requested.  ' +
+					f'You must supply a file and offset with the {fmt_opt(p)!r} option' )
+
+			if wd.base_type == 'incog_base' and cfg.old_incog_fmt:
+				opt_display(key,val,beg='Selected',end=' ')
+				opt_display('old_incog_fmt',beg='conflicts with',end=':\n')
+				die( 'UserOptError', 'Export to old incog wallet format unsupported' )
+			elif wd.type == 'brain':
+				die( 'UserOptError', 'Output to brainwallet format unsupported' )
+
+	chk_out_fmt = chk_in_fmt
+
+	def chk_hidden_incog_input_params(key,val,desc):
+		a = val.rsplit(',',1) # permit comma in filename
+		if len(a) != 2:
+			opt_display(key,val)
+			die( 'UserOptError', 'Option requires two comma-separated arguments' )
+
+		fn,offset = a
+		opt_is_int(offset,desc)
+
+		from .fileutil import check_infile,check_outdir,check_outfile
+		if key == 'hidden_incog_input_params':
+			check_infile(fn,blkdev_ok=True)
+			key2 = 'in_fmt'
+		else:
+			try: os.stat(fn)
+			except:
+				b = os.path.dirname(fn)
+				if b:
+					check_outdir(b)
+			else:
+				check_outfile(fn,blkdev_ok=True)
+			key2 = 'out_fmt'
+
+		if hasattr(cfg,key2):
+			val2 = getattr(cfg,key2)
+			from .wallet import get_wallet_data
+			wd = get_wallet_data('incog_hidden')
+			if val2 and val2 not in wd.fmt_codes:
+				die( 'UserOptError', f'Option conflict:\n  {fmt_opt(key)}, with\n  {fmt_opt(key2)}={val2}' )
+
+	chk_hidden_incog_output_params = chk_hidden_incog_input_params
+
+	def chk_subseeds(key,val,desc):
+		from .subseed import SubSeedIdxRange
+		opt_is_int(val,desc)
+		opt_compares(int(val),'>=',SubSeedIdxRange.min_idx,desc)
+		opt_compares(int(val),'<=',SubSeedIdxRange.max_idx,desc)
+
+	def chk_seed_len(key,val,desc):
+		from .seed import Seed
+		opt_is_int(val,desc)
+		opt_is_in_list(int(val),Seed.lens,desc)
+
+	def chk_hash_preset(key,val,desc):
+		from .crypto import Crypto
+		opt_is_in_list(val,list(Crypto.hash_presets.keys()),desc)
+
+	def chk_brain_params(key,val,desc):
+		a = val.split(',')
+		if len(a) != 2:
+			opt_display(key,val)
+			die( 'UserOptError', 'Option requires two comma-separated arguments' )
+		opt_is_int(a[0],'seed length '+desc)
+		from .seed import Seed
+		opt_is_in_list(int(a[0]),Seed.lens,'seed length '+desc)
+		from .crypto import Crypto
+		opt_is_in_list(a[1],list(Crypto.hash_presets.keys()),'hash preset '+desc)
+
+	def chk_usr_randchars(key,val,desc):
+		if val == 0:
+			return
+		opt_is_int(val,desc)
+		opt_compares(val,'>=',cfg.min_urandchars,desc)
+		opt_compares(val,'<=',cfg.max_urandchars,desc)
+
+	def chk_tx_fee(key,val,desc):
+		pass
+#		opt_is_tx_fee(key,val,desc) # TODO: move this check elsewhere
+
+	def chk_tx_confs(key,val,desc):
+		opt_is_int(val,desc)
+		opt_compares(val,'>=',1,desc)
+
+	def chk_vsize_adj(key,val,desc):
+		opt_is_float(val,desc)
+		from .util import ymsg
+		ymsg(f'Adjusting transaction vsize by a factor of {float(val):1.2f}')
+
+	def chk_daemon_id(key,val,desc):
+		from .daemon import CoinDaemon
+		opt_is_in_list(val,CoinDaemon.all_daemon_ids(),desc)
+
+# TODO: move this check elsewhere
+#	def chk_rbf(key,val,desc):
+#		if not proto.cap('rbf'):
+#			die( 'UserOptError', f'--rbf requested, but {proto.coin} does not support replace-by-fee transactions' )
+
+#	def chk_bob(key,val,desc):
+#		from .proto.btc.regtest import MMGenRegtest
+#		try:
+#			os.stat(os.path.join(MMGenRegtest(cfg,cfg.coin).d.datadir,'regtest','debug.log'))
+#		except:
+#			die( 'UserOptError',
+#				'Regtest (Bob and Alice) mode not set up yet.  ' +
+#				f"Run '{gc.proj_name.lower()}-regtest setup' to initialize." )
+#
+#	chk_alice = chk_bob
+
+	def chk_locktime(key,val,desc):
+		opt_is_int(val,desc)
+		opt_compares(int(val),'>',0,desc)
+
+	def chk_columns(key,val,desc):
+		opt_compares(int(val),'>',10,desc)
+
+# TODO: move this check elsewhere
+#	def chk_token(key,val,desc):
+#		if not 'token' in proto.caps:
+#			die( 'UserOptError', f'Coin {tx.coin!r} does not support the --token option' )
+#		if len(val) == 40 and is_hex_str(val):
+#			return
+#		if len(val) > 20 or not all(s.isalnum() for s in val):
+#			die( 'UserOptError', f'{val!r}: invalid parameter for --token option' )
+
+	from .util import is_int,Msg
+
+	cfuncs = { k:v for k,v in locals().items() if k.startswith('chk_') }
+
+	for key in usr_opts:
+		val = getattr(cfg,key)
+		desc = f'parameter for {fmt_opt(key)!r} option'
+
+		if key in cfg._infile_opts:
+			from .fileutil import check_infile
+			check_infile(val) # file exists and is readable - dies on error
+		elif key == 'outdir':
+			from .fileutil import check_outdir
+			check_outdir(val) # dies on error
+		elif 'chk_'+key in cfuncs:
+			cfuncs['chk_'+key](key,val,desc)
+		elif cfg.debug:
+			Msg(f'check_usr_opts(): No test for config opt {key!r}')
+
+def fmt_opt(o):
+	return '--' + o.replace('_','-')
+
+def opt_postproc_debug(cfg):
+	a = [k for k in dir(cfg) if k[:2] != '__' and getattr(cfg,k) != None]
+	b = [k for k in dir(cfg) if k[:2] != '__' and getattr(cfg,k) == None]
+	from .util import Msg
+	Msg('\n    Configuration opts:')
+	for e in [d for d in dir(cfg) if d[:2] != '__']:
+		Msg('        {:<20}: {}'.format(e, getattr(cfg,e)))
+	Msg("    Configuration opts set to 'None':")
+	Msg('        {}\n'.format('\n        '.join(b)))
+	Msg('\n=== end opts.py debug ===\n')
+
+def set_for_type(
+		name,
+		val,
+		refval,
+		desc,
+		invert_bool = False,
+		src         = None ):
+
+	if type(refval) == bool:
+		v = str(val).lower()
+		ret = (
+			True  if v in ('true','yes','1','on') else
+			False if v in ('false','no','none','0','off','') else
+			None
+		)
+		if ret is not None:
+			return not ret if invert_bool else ret
+	else:
+		try:
+			return type(refval)(not val if invert_bool else val)
+		except:
+			pass
+
+	die(1,'{a!r}: invalid value for {b} {c!r}{d} (must be of type {e!r})'.format(
+		a = val,
+		b = desc,
+		c = fmt_opt(name) if desc == 'command-line option' else name,
+		d = f' in {src!r}' if src else '',
+		e = type(refval).__name__ ))

mmgen/data/version

@@ -1 +1 @@
-13.3.dev43
+13.3.dev44

mmgen/opts.py

@@ -21,84 +21,9 @@ opts: MMGen-specific command-line options processing after generic processing by
 """
 import sys,os
 
-from .cfg import gc,Config
-from .base_obj import Lockable
-
-import mmgen.share.Opts
-
-class UserOpts: pass
-opt = UserOpts()
-
-def usage():
-	from .util import Die
-	Die(1,mmgen.share.Opts.make_usage_str(gc.prog_name,'user',usage_data))
-
-def version():
-	from .util import Die,fmt
-	Die(0,fmt(f"""
-		{gc.prog_name.upper()} version {gc.version}
-		Part of the {gc.proj_name} suite, an online/offline cryptocurrency wallet for the
-		command line.  Copyright (C){gc.Cdates} {gc.author} {gc.email}
-	""",indent='  ').rstrip())
-
-def delete_data(opts_data):
-	for k in ('text','notes','code'):
-		if k in opts_data:
-			del opts_data[k]
-	del mmgen.share.Opts.make_help
-	del mmgen.share.Opts.process_uopts
-	del mmgen.share.Opts.parse_opts
-
-def post_init(cfg):
-	global opts_data_save,opt_filter_save
-	if cfg.help or cfg.longhelp:
-		print_help(cfg,opts_data_save,opt_filter_save)
-	else:
-		delete_data(opts_data_save)
-		del opts_data_save,opt_filter_save
-
-def print_help(cfg,opts_data,opt_filter):
-
-	if not 'code' in opts_data:
-		opts_data['code'] = {}
-
-	from .protocol import init_proto_from_cfg
-	proto = init_proto_from_cfg(cfg,need_amt=True)
-
-	if getattr(cfg,'longhelp',None):
-		opts_data['code']['long_options'] = common_opts_data['code']
-		def remove_unneeded_long_opts():
-			d = opts_data['text']['long_options']
-			if proto.base_proto != 'Ethereum':
-				d = '\n'.join(''+i for i in d.split('\n') if not '--token' in i)
-			opts_data['text']['long_options'] = d
-		remove_unneeded_long_opts()
-
-	from .ui import do_pager
-	do_pager(mmgen.share.Opts.make_help( cfg, proto, opts_data, opt_filter ))
-
-	sys.exit(0)
-
-def fmt_opt(o):
-	return '--' + o.replace('_','-')
-
-def die_on_incompatible_opts(cfg):
-	for group in cfg._incompatible_opts:
-		bad = [k for k in cfg.__dict__ if k in group and getattr(cfg,k) != None]
-		if len(bad) > 1:
-			from .util import die
-			die(1,'Conflicting options: {}'.format(', '.join(map(fmt_opt,bad))))
-
-def _show_hash_presets():
-	fs = '  {:<7} {:<6} {:<3}  {}'
-	from .util import msg
-	from .crypto import Crypto
-	msg('Available parameters for scrypt.hash():')
-	msg(fs.format('Preset','N','r','p'))
-	for i in sorted(Crypto.hash_presets.keys()):
-		msg(fs.format(i,*Crypto.hash_presets[i]))
-	msg('N = memory usage (power of two), p = iterations (rounds)')
-	sys.exit(0)
+from .cfg import gc
+
+import mmgen.share.Opts as Opts
 
 def opt_preproc_debug(po):
 	d = (
@@ -114,101 +39,7 @@ def opt_preproc_debug(po):
 	for label,data,pretty in d:
 		Msg('    {:<20}: {}'.format(label,'\n' + fmt_list(data,fmt='col',indent=' '*8) if pretty else data))
 
-def opt_postproc_debug(cfg):
-	a = [k for k in dir(cfg) if k[:2] != '__' and getattr(cfg,k) != None]
-	b = [k for k in dir(cfg) if k[:2] != '__' and getattr(cfg,k) == None]
-	from .util import Msg
-	Msg('\n    Global vars:')
-	for e in [d for d in dir(cfg) if d[:2] != '__']:
-		Msg('        {:<20}: {}'.format(e, getattr(cfg,e)))
-	Msg("    Global vars set to 'None':")
-	Msg('        {}\n'.format('\n        '.join(b)))
-	Msg('\n=== end opts.py debug ===\n')
-
-def set_for_type(val,refval,desc,invert_bool=False,src=None):
-
-	if type(refval) == bool:
-		v = str(val).lower()
-		ret = (
-			True  if v in ('true','yes','1','on') else
-			False if v in ('false','no','none','0','off','') else
-			None
-		)
-		if ret is not None:
-			return not ret if invert_bool else ret
-	else:
-		try:
-			return type(refval)(not val if invert_bool else val)
-		except:
-			pass
-
-	from .util import die
-	die(1,'{!r}: invalid value for {!r}{} (must be of type {!r})'.format(
-		val,
-		desc,
-		' in {!r}'.format(src) if src else '',
-		type(refval).__name__) )
-
-def set_cfg_from_cfg_file(
-		cfg,
-		ucfg,
-		cfgfile_autoset_opts,
-		cfgfile_auto_typeset_opts,
-		env_cfg,
-		need_proto ):
-
-	if need_proto:
-		from .protocol import init_proto
-
-	for d in ucfg.get_lines():
-		if d.name in cfg._cfg_file_opts:
-			ns = d.name.split('_')
-			if ns[0] in gc.core_coins:
-				if not need_proto:
-					continue
-				nse,tn = (
-					(ns[2:],ns[1]=='testnet') if len(ns) > 2 and ns[1] in ('mainnet','testnet') else
-					(ns[1:],False)
-				)
-				cls = type(init_proto( cfg, ns[0], tn, need_amt=True )) # no instance yet, so override _class_ attr
-				attr = '_'.join(nse)
-			else:
-				cls = cfg
-				attr = d.name
-			refval = getattr(cls,attr)
-			val = ucfg.parse_value(d.value,refval)
-			if not val:
-				from .util import die
-				die( 'CfgFileParseError', f'Parse error in file {ucfg.fn!r}, line {d.lineno}' )
-			val_conv = set_for_type(val,refval,attr,src=ucfg.fn)
-			if attr not in env_cfg:
-				setattr(cls,attr,val_conv)
-		elif d.name in cfg._autoset_opts:
-			cfgfile_autoset_opts[d.name] = d.value
-		elif d.name in cfg._auto_typeset_opts:
-			cfgfile_auto_typeset_opts[d.name] = d.value
-		else:
-			from .util import die
-			die( 'CfgFileParseError', f'{d.name!r}: unrecognized option in {ucfg.fn!r}, line {d.lineno}' )
-
-def set_cfg_from_env(cfg):
-	for name,val in ((k,v) for k,v in os.environ.items() if k.startswith('MMGEN_')):
-		if name == 'MMGEN_DEBUG_ALL':
-			continue
-		elif name in cfg._env_opts:
-			if val: # ignore empty string values; string value of '0' or 'false' sets variable to False
-				disable = name.startswith('MMGEN_DISABLE_')
-				gname = name[(6,14)[disable]:].lower()
-				if hasattr(cfg,gname):
-					setattr(cfg,gname,set_for_type(val,getattr(cfg,gname),name,disable))
-					yield gname
-				else:
-					raise ValueError(f'Name {gname!r} not present in globals')
-		else:
-			raise ValueError(f'{name!r} is not a valid MMGen environment variable')
-
-common_opts_data = {
-	# Most but not all of these set the corresponding global var
+long_opts_data = {
 	'text': """
 --, --accept-defaults      Accept defaults at all prompts
 --, --coin=c               Choose coin unit. Default: BTC. Current choice: {cu_dfl}
@@ -256,415 +87,112 @@ opts_data_dfl = {
 	}
 }
 
-def init(
-	cfg,
-	opts_data   = None,
-	add_opts    = None,
-	init_opts   = None,
-	opt_filter  = None,
-	parse_only  = False,
-	parsed_opts = None,
-	need_proto  = True,
-	need_amt    = True,
-	do_post_init = False ):
-
-	if opts_data is None:
-		opts_data = opts_data_dfl
-
-	opts_data['text']['long_options'] = common_opts_data['text']
+class UserOpts:
 
-	# Make this available to usage()
-	global usage_data
-	usage_data = opts_data['text'].get('usage2') or opts_data['text']['usage']
-
-	# po: (user_opts,cmd_args,opts,filtered_opts)
-	po = parsed_opts or mmgen.share.Opts.parse_opts(opts_data,opt_filter=opt_filter,parse_only=parse_only)
-
-	if init_opts: # allow programs to preload user opts
-		for uopt,val in init_opts.items():
-			if uopt not in po.user_opts:
-				po.user_opts[uopt] = val
-
-	if parse_only and not any(k in po.user_opts for k in ('version','help','longhelp')):
-		cfg._parsed_opts = po
-		return
+	def __init__(
+			self,
+			cfg,
+			opts_data   = None,
+			init_opts   = None, # dict containing opts to pre-initialize
+			opt_filter  = None, # whitelist of opt letters; all others are skipped
+			parse_only  = False,
+			parsed_opts = None ):
 
-	if os.getenv('MMGEN_DEBUG_OPTS'):
-		opt_preproc_debug(po)
+		self.opts_data = od = opts_data or opts_data_dfl
+		self.opt_filter = opt_filter
 
-	# Copy parsed opts to opt, setting values to None if not set by user
-	for o in set(
-			po.opts
-			+ po.filtered_opts
-			+ tuple(add_opts or [])
-			+ tuple(init_opts or [])
-			+ cfg._init_opts
-			+ cfg._common_opts ):
-		setattr(opt,o,po.user_opts[o] if o in po.user_opts else None)
+		od['text']['long_options'] = long_opts_data['text']
 
-	if opt.version:
-		version() # exits
+		# Make this available to usage()
+		self.usage_data = od['text'].get('usage2') or od['text']['usage']
 
-	if opt.show_hash_presets:
-		_show_hash_presets() # exits
+		# po: (user_opts,cmd_args,opts,filtered_opts)
+		po = parsed_opts or Opts.parse_opts(od,opt_filter=opt_filter,parse_only=parse_only)
 
-	from .util import wrap_ripemd160
-	wrap_ripemd160() # ripemd160 used by mmgen_cfg_file()
+		cfg._args = po.cmd_args
+		cfg._uopts = uopts = po.user_opts
 
-	# === begin Config() initialization === #
+		if init_opts: # initialize user opts to given value
+			for uopt,val in init_opts.items():
+				if uopt not in uopts:
+					uopts[uopt] = val
 
-	env_cfg = tuple(set_cfg_from_env(cfg))
+		cfg._opts = self
+		cfg._parsed_opts = po
+		cfg._use_env = True
+		cfg._use_cfg_file = not 'skip_cfg_file' in uopts
 
-	# do this after setting ‘hold_protect_disable’ from env
-	from .term import init_term
-	init_term(cfg)
+		if os.getenv('MMGEN_DEBUG_OPTS'):
+			opt_preproc_debug(po)
 
-	# --data-dir overrides computed value of data_dir_root
-	cfg._data_dir_root_override = opt.data_dir
-	if opt.data_dir:
-		del opt.data_dir
+		if 'version' in uopts:
+			self.version() # exits
 
-	from .fileutil import check_or_create_dir
-	check_or_create_dir(cfg.data_dir_root)
+		if 'show_hash_presets' in uopts:
+			self.show_hash_presets() # exits
 
-	cfgfile_autoset_opts = {}
-	cfgfile_auto_typeset_opts = {}
+		if parse_only:
+			return
 
-	if not opt.skip_cfg_file:
-		from .cfgfile import mmgen_cfg_file
-		# check for changes in system template file - term must be initialized
-		mmgen_cfg_file(cfg,'sample')
-		set_cfg_from_cfg_file(
-			cfg,
-			mmgen_cfg_file(cfg,'usr'),
-			cfgfile_autoset_opts,
-			cfgfile_auto_typeset_opts,
-			env_cfg,
-			need_proto )
-
-	# Set cfg from opts, setting type from original class attr in Config if it exists:
-	auto_keys = tuple(cfg._autoset_opts.keys()) + tuple(cfg._auto_typeset_opts.keys())
-	for key,val in opt.__dict__.items():
-		if val is not None and key not in auto_keys:
-			setattr(cfg, key, set_for_type(val,getattr(cfg,key),'--'+key) if hasattr(cfg,key) else val)
-
-	if cfg.regtest or cfg.bob or cfg.alice or cfg.carol or gc.prog_name == 'mmgen-regtest':
-		cfg.network = 'regtest'
-		cfg.regtest_user = 'bob' if cfg.bob else 'alice' if cfg.alice else 'carol' if cfg.carol else None
-	else:
-		cfg.network = 'testnet' if cfg.testnet else 'mainnet'
-
-	cfg.coin = cfg.coin.upper()
-	cfg.token = cfg.token.upper() or None
-
-	# === end global var initialization === #
-
-	"""
-	cfg.color is finalized, so initialize color
-	"""
-	if cfg.color: # MMGEN_DISABLE_COLOR sets this to False
-		from .color import init_color
-		init_color(num_colors=('auto',256)[bool(cfg.force_256_color)])
-
-	die_on_incompatible_opts(cfg)
-
-	check_or_create_dir(cfg.data_dir)
-
-	# Set globals from opts, setting type from original global value if it exists:
-	for key in cfg._autoset_opts:
-		if hasattr(opt,key):
-			assert not hasattr(cfg,key), f'{key!r} is in cfg!'
-			if getattr(opt,key) is not None:
-				setattr(cfg, key, get_autoset_opt(cfg,key,getattr(opt,key),src='cmdline'))
-			elif key in cfgfile_autoset_opts:
-				setattr(cfg, key, get_autoset_opt(cfg,key,cfgfile_autoset_opts[key],src='cfgfile'))
-			else:
-				setattr(cfg, key, cfg._autoset_opts[key].choices[0])
-
-	set_auto_typeset_opts(cfg,cfgfile_auto_typeset_opts)
-
-	if cfg.debug and gc.prog_name != 'test.py':
-		cfg.verbose = True
-
-	if cfg.verbose:
-		cfg.quiet = False
-
-	if cfg.debug_opts:
-		opt_postproc_debug(cfg)
-
-	# Check user-set opts without modifying them
-	check_usr_opts(cfg,po.user_opts)
-
-	from .util import Util
-	cfg._util = Util(cfg)
-	cfg._uopts = po.user_opts
-	cfg._args = po.cmd_args
-
-	cfg._lock()
-
-	if need_proto:
-		from .protocol import warn_trustlevel,init_proto_from_cfg
-		warn_trustlevel(cfg)
-		# requires the default-to-none behavior, so do after the lock:
-		cfg._proto = init_proto_from_cfg(cfg,need_amt=need_amt)
-
-	# print help screen only after globals initialized and locked:
-	if cfg.help or cfg.longhelp:
-		if not do_post_init:
-			print_help(cfg,opts_data,opt_filter) # exits
-
-	if do_post_init:
-		global opts_data_save,opt_filter_save
-		opts_data_save = opts_data
-		opt_filter_save = opt_filter
-	else:
-		delete_data(opts_data)
-
-def check_usr_opts(cfg,usr_opts): # Raises an exception if any check fails
-
-	def opt_splits(val,sep,n,desc):
-		sepword = 'comma' if sep == ',' else 'colon' if sep == ':' else repr(sep)
-		try:
-			l = val.split(sep)
-		except:
-			die( 'UserOptError', f'{val!r}: invalid {desc} (not {sepword}-separated list)' )
-
-		if len(l) != n:
-			die( 'UserOptError', f'{val!r}: invalid {desc} ({n} {sepword}-separated items required)' )
-
-	def opt_compares(val,op_str,target,desc,desc2=''):
-		import operator as o
-		op_f = { '<':o.lt, '<=':o.le, '>':o.gt, '>=':o.ge, '=':o.eq }[op_str]
-		if not op_f(val,target):
-			d2 = desc2 + ' ' if desc2 else ''
-			die( 'UserOptError', f'{val}: invalid {desc} ({d2}not {op_str} {target})' )
-
-	def opt_is_int(val,desc):
-		if not is_int(val):
-			die( 'UserOptError', f'{val!r}: invalid {desc} (not an integer)' )
-
-	def opt_is_float(val,desc):
-		try:
-			float(val)
-		except:
-			die( 'UserOptError', f'{val!r}: invalid {desc} (not a floating-point number)' )
-
-	def opt_is_in_list(val,tlist,desc):
-		if val not in tlist:
-			q,sep = (('',','),("'","','"))[type(tlist[0]) == str]
-			die( 'UserOptError', '{q}{v}{q}: invalid {w}\nValid choices: {q}{o}{q}'.format(
-				v = val,
-				w = desc,
-				q = q,
-				o = sep.join(map(str,sorted(tlist))) ))
-
-	def opt_unrecognized(key,val,desc='value'):
-		die( 'UserOptError', f'{val!r}: unrecognized {desc} for option {fmt_opt(key)!r}' )
-
-	def opt_display(key,val='',beg='For selected',end=':\n'):
-		from .util import msg_r
-		msg_r('{} option {!r}{}'.format(
-			beg,
-			f'{fmt_opt(key)}={val}' if val else fmt_opt(key),
-			end ))
-
-	def chk_in_fmt(key,val,desc):
-		from .wallet import get_wallet_data
-		wd = get_wallet_data(fmt_code=val)
-		if not wd:
-			opt_unrecognized(key,val)
-		if key == 'out_fmt':
-			p = 'hidden_incog_output_params'
-
-			if wd.type == 'incog_hidden' and not getattr(opt,p):
-				die( 'UserOptError',
-					'Hidden incog format output requested.  ' +
-					f'You must supply a file and offset with the {fmt_opt(p)!r} option' )
-
-			if wd.base_type == 'incog_base' and opt.old_incog_fmt:
-				opt_display(key,val,beg='Selected',end=' ')
-				opt_display('old_incog_fmt',beg='conflicts with',end=':\n')
-				die( 'UserOptError', 'Export to old incog wallet format unsupported' )
-			elif wd.type == 'brain':
-				die( 'UserOptError', 'Output to brainwallet format unsupported' )
-
-	chk_out_fmt = chk_in_fmt
-
-	def chk_hidden_incog_input_params(key,val,desc):
-		a = val.rsplit(',',1) # permit comma in filename
-		if len(a) != 2:
-			opt_display(key,val)
-			die( 'UserOptError', 'Option requires two comma-separated arguments' )
-
-		fn,offset = a
-		opt_is_int(offset,desc)
-
-		from .fileutil import check_infile,check_outdir,check_outfile
-		if key == 'hidden_incog_input_params':
-			check_infile(fn,blkdev_ok=True)
-			key2 = 'in_fmt'
-		else:
-			try: os.stat(fn)
-			except:
-				b = os.path.dirname(fn)
-				if b:
-					check_outdir(b)
-			else:
-				check_outfile(fn,blkdev_ok=True)
-			key2 = 'out_fmt'
-
-		if hasattr(opt,key2):
-			val2 = getattr(opt,key2)
-			from .wallet import get_wallet_data
-			wd = get_wallet_data('incog_hidden')
-			if val2 and val2 not in wd.fmt_codes:
-				die( 'UserOptError', f'Option conflict:\n  {fmt_opt(key)}, with\n  {fmt_opt(key2)}={val2}' )
-
-	chk_hidden_incog_output_params = chk_hidden_incog_input_params
-
-	def chk_subseeds(key,val,desc):
-		from .subseed import SubSeedIdxRange
-		opt_is_int(val,desc)
-		opt_compares(int(val),'>=',SubSeedIdxRange.min_idx,desc)
-		opt_compares(int(val),'<=',SubSeedIdxRange.max_idx,desc)
-
-	def chk_seed_len(key,val,desc):
-		from .seed import Seed
-		opt_is_int(val,desc)
-		opt_is_in_list(int(val),Seed.lens,desc)
-
-	def chk_hash_preset(key,val,desc):
+		if 'data_dir' in uopts:
+			cfg._data_dir_root_override = uopts['data_dir']
+			del uopts['data_dir']
+
+	def init_bottom(self,cfg):
+
+		# print help screen only after globals initialized and locked:
+		if cfg.help or cfg.longhelp:
+			self.print_help(cfg) # exits
+
+		# delete unneeded data:
+		for k in ('text','notes','code'):
+			if k in self.opts_data:
+				del self.opts_data[k]
+		del Opts.make_help
+		del Opts.process_uopts
+		del Opts.parse_opts
+
+	def usage(self):
+		from .util import Die
+		Die(1,Opts.make_usage_str(gc.prog_name,'user',self.usage_data))
+
+	def version(self):
+		from .util import Die,fmt
+		Die(0,fmt(f"""
+			{gc.prog_name.upper()} version {gc.version}
+			Part of the {gc.proj_name} suite, an online/offline cryptocurrency wallet for the
+			command line.  Copyright (C){gc.Cdates} {gc.author} {gc.email}
+		""",indent='  ').rstrip())
+
+	def print_help(self,cfg):
+
+		if not 'code' in self.opts_data:
+			self.opts_data['code'] = {}
+
+		from .protocol import init_proto_from_cfg
+		proto = init_proto_from_cfg(cfg,need_amt=True)
+
+		if getattr(cfg,'longhelp',None):
+			self.opts_data['code']['long_options'] = long_opts_data['code']
+			def remove_unneeded_long_opts():
+				d = self.opts_data['text']['long_options']
+				if proto.base_proto != 'Ethereum':
+					d = '\n'.join(''+i for i in d.split('\n') if not '--token' in i)
+				self.opts_data['text']['long_options'] = d
+			remove_unneeded_long_opts()
+
+		from .ui import do_pager
+		do_pager(Opts.make_help( cfg, proto, self.opts_data, self.opt_filter ))
+
+		sys.exit(0)
+
+	def show_hash_presets(self):
+		fs = '      {:<6} {:<3} {:<2} {}'
+		from .util import msg
 		from .crypto import Crypto
-		opt_is_in_list(val,list(Crypto.hash_presets.keys()),desc)
-
-	def chk_brain_params(key,val,desc):
-		a = val.split(',')
-		if len(a) != 2:
-			opt_display(key,val)
-			die( 'UserOptError', 'Option requires two comma-separated arguments' )
-		opt_is_int(a[0],'seed length '+desc)
-		from .seed import Seed
-		opt_is_in_list(int(a[0]),Seed.lens,'seed length '+desc)
-		from .crypto import Crypto
-		opt_is_in_list(a[1],list(Crypto.hash_presets.keys()),'hash preset '+desc)
-
-	def chk_usr_randchars(key,val,desc):
-		if val == 0:
-			return
-		opt_is_int(val,desc)
-		opt_compares(val,'>=',cfg.min_urandchars,desc)
-		opt_compares(val,'<=',cfg.max_urandchars,desc)
-
-	def chk_tx_fee(key,val,desc):
-		pass
-#		opt_is_tx_fee(key,val,desc) # TODO: move this check elsewhere
-
-	def chk_tx_confs(key,val,desc):
-		opt_is_int(val,desc)
-		opt_compares(val,'>=',1,desc)
-
-	def chk_vsize_adj(key,val,desc):
-		opt_is_float(val,desc)
-		from .util import ymsg
-		ymsg(f'Adjusting transaction vsize by a factor of {float(val):1.2f}')
-
-	def chk_daemon_id(key,val,desc):
-		from .daemon import CoinDaemon
-		opt_is_in_list(val,CoinDaemon.all_daemon_ids(),desc)
-
-# TODO: move this check elsewhere
-#	def chk_rbf(key,val,desc):
-#		if not proto.cap('rbf'):
-#			die( 'UserOptError', f'--rbf requested, but {proto.coin} does not support replace-by-fee transactions' )
-
-#	def chk_bob(key,val,desc):
-#		from .proto.btc.regtest import MMGenRegtest
-#		try:
-#			os.stat(os.path.join(MMGenRegtest(cfg,cfg.coin).d.datadir,'regtest','debug.log'))
-#		except:
-#			die( 'UserOptError',
-#				'Regtest (Bob and Alice) mode not set up yet.  ' +
-#				f"Run '{gc.proj_name.lower()}-regtest setup' to initialize." )
-#
-#	chk_alice = chk_bob
-
-	def chk_locktime(key,val,desc):
-		opt_is_int(val,desc)
-		opt_compares(int(val),'>',0,desc)
-
-	def chk_columns(key,val,desc):
-		opt_compares(int(val),'>',10,desc)
-
-# TODO: move this check elsewhere
-#	def chk_token(key,val,desc):
-#		if not 'token' in proto.caps:
-#			die( 'UserOptError', f'Coin {tx.coin!r} does not support the --token option' )
-#		if len(val) == 40 and is_hex_str(val):
-#			return
-#		if len(val) > 20 or not all(s.isalnum() for s in val):
-#			die( 'UserOptError', f'{val!r}: invalid parameter for --token option' )
-
-	from .util import is_int,die,Msg
-
-	cfuncs = { k:v for k,v in locals().items() if k.startswith('chk_') }
-
-	for key in usr_opts:
-		val = getattr(cfg,key)
-		desc = f'parameter for {fmt_opt(key)!r} option'
-
-		if key in cfg._infile_opts:
-			from .fileutil import check_infile
-			check_infile(val) # file exists and is readable - dies on error
-		elif key == 'outdir':
-			from .fileutil import check_outdir
-			check_outdir(val) # dies on error
-		elif 'chk_'+key in cfuncs:
-			cfuncs['chk_'+key](key,val,desc)
-		elif cfg.debug:
-			Msg(f'check_usr_opts(): No test for opt {key!r}')
-
-def set_auto_typeset_opts(cfg,cfgfile_auto_typeset_opts):
-
-	def do_set(key,val,ref_type):
-		assert not hasattr(cfg,key), f'{key!r} is in cfg!'
-		setattr(cfg,key,None if val is None else ref_type(val))
-
-	for key,ref_type in cfg._auto_typeset_opts.items():
-		if hasattr(opt,key):
-			do_set(key, getattr(opt,key), ref_type)
-		elif key in cfgfile_auto_typeset_opts:
-			do_set(key, cfgfile_auto_typeset_opts[key], ref_type)
-
-def get_autoset_opt(cfg,key,val,src):
-
-	def die_on_err(desc):
-		from .util import fmt_list,die
-		die(
-			'UserOptError',
-			'{a!r}: invalid {b} (not {c}: {d})'.format(
-				a = val,
-				b = {
-					'cmdline': 'parameter for option --{}'.format(key.replace('_','-')),
-					'cfgfile': 'value for cfg file option {!r}'.format(key)
-				}[src],
-				c = desc,
-				d = fmt_list(data.choices) ))
-
-	class opt_type:
-
-		def nocase_str():
-			if val.lower() in data.choices:
-				return val.lower()
-			else:
-				die_on_err('one of')
-
-		def nocase_pfx():
-			cs = [s for s in data.choices if s.startswith(val.lower())]
-			if len(cs) == 1:
-				return cs[0]
-			else:
-				die_on_err('unique substring of')
-
-	data = cfg._autoset_opts[key]
-
-	return getattr(opt_type,data.type)()
+		msg('  Available parameters for scrypt.hash():')
+		msg(fs.format('Preset','N','r','p'))
+		for i in sorted(Crypto.hash_presets.keys()):
+			msg(fs.format(i,*Crypto.hash_presets[i]))
+		msg('  N = memory usage (power of two)\n  p = iterations (rounds)')
+		sys.exit(0)

test/test_py_d/ts_misc.py

@@ -34,6 +34,7 @@ class TestSuiteMisc(TestSuiteBase):
 	cmd_group = (
 		('rpc_backends',     'RPC backends'),
 		('xmrwallet_txview', "'mmgen-xmrwallet' txview"),
+		('coin_daemon_info', "'examples/coin-daemon-info.py'"),
 		('term_echo',        "term.set('echo')"),
 		('term_cleanup',     'term.register_cleanup()'),
 	)
@@ -56,6 +57,16 @@ class TestSuiteMisc(TestSuiteBase):
 			assert s in res, s
 		return t
 
+	def coin_daemon_info(self):
+		start_test_daemons('ltc','eth')
+		t = self.spawn(f'examples/coin-daemon-info.py',['btc','ltc','eth'],cmd_dir='.')
+		for s in ('BTC','LTC','ETH'):
+			t.expect(s + r'\s+mainnet\s+Up',regex=True)
+		if cfg.pexpect_spawn:
+			t.send('q')
+		stop_test_daemons('ltc','eth')
+		return t
+
 	def term_echo(self):
 
 		def test_echo():