From b6b04b48c61ae6d26f165ed09151a91b21047704 Mon Sep 17 00:00:00 2001 From: Karol Trzeszczkowski Date: Tue, 26 Feb 2019 11:42:55 +0100 Subject: [PATCH] timelocking and first ui --- LICENSE | 674 +++++++++++++++++++++++++ README.md | 4 + last-will-plugin.zip | Bin 0 -> 7846 bytes last-will-plugin/__init__.py | 5 + last-will-plugin/last_will_contract.py | 121 +++++ last-will-plugin/op_codes.py | 23 + last-will-plugin/qt.py | 102 ++++ last-will-plugin/ui.py | 382 ++++++++++++++ manifest.json | 11 + 9 files changed, 1322 insertions(+) create mode 100644 LICENSE create mode 100644 README.md create mode 100644 last-will-plugin.zip create mode 100644 last-will-plugin/__init__.py create mode 100644 last-will-plugin/last_will_contract.py create mode 100644 last-will-plugin/op_codes.py create mode 100644 last-will-plugin/qt.py create mode 100644 last-will-plugin/ui.py create mode 100644 manifest.json diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..57b8132 --- /dev/null +++ b/README.md @@ -0,0 +1,4 @@ +# Electron Cash Coinsplitter plugin +This is [Mark's Lundeberg's coinsplitter](https://github.com/markblundeberg/coinsplitter) ported to the plugin architecture. + +All of the user guides can be found in description of the oryginal coinsplitter. The main difference is that now coinsplitter is in the new tab, not a dialog in the menu. You also need a separate plugin ([BSV Plugin](https://github.com/KarolTrzeszczkowski/Electron-Cash-BSV-Plugin)) to access your funds on the BSV chain via Electron Cash. Make sure you read BSV Plugin README.md before using it. You can import your private keys to a different wallet app if you do't want to use BSV Plugin. diff --git a/last-will-plugin.zip b/last-will-plugin.zip new file mode 100644 index 0000000000000000000000000000000000000000..801560b0bf13909910d4ef3d17608c13250bcfb2 GIT binary patch literal 7846 zcmZ{p1yEc|v&R>=#oZ-%aCgn(ZXvkC;;=Y`;O@a?kzgUXyA#|(65N6X*ASdXzPk6_ zeDCJXsjWG^HFbW|b!JZY{98>C4jvB<@YD^`cmtr(uClKe9g!H#P=4g58Xb*_^#CM>sKhIe>s}(W(;yqNx6l zy_9p%N#;m{p~p>o3)hvIe2fOQSqdLd1*flRBq}}#7Gmv(n^;(k!u1^{#`tmufazd&n2N@v%}&)!SthO*!dP~to}N5^pN?$Rbu?R%SNe`Lrqeg_JsW)#Ymn1#1BA`i0rEDD63T(y z_35i>BvX1~8w*p>u!u54#J$LHA8qfX_~LT58$aRD-}@`jycbh;qL>*++$dH1>o;tg6Oj5Zs0XNl4raL(@$V;W( z%==>uh?SMCLK~rwl^mS+93_`K)VqhZ>BFRpiQW11wD(05mg7nK*_^)#9-hSLL}f_- zxPb-Vo(>2L1s*F`8Eq!|Z~#7Afqo!aL|C3D9>aWX!=pELvb51(_Hw_80l6 zDl)pc$vG99>NAL$ezqB^*vb$Uq8n0Zg%Q-uw`fa+GdC%s=+h3OTI+tP4ZfB~5s(U- zY5d&H)4QOov-kv)d_OZG()LY*^?=q8Swq8ocFb8RAjmah{8g9A_Xmb%tYU#0Af<@n z^e{dqpC5s*QPw8N!#Y^C3$34C=H$^#sq)eqlTNU5ply5(o&uftz5(J8y&6N%BY{nE z$tXabk|ZwGxJQA~_!TE+Jd)6QTS31PY@g2T*$l98{Zd(Db|THx`bt}EUllgo?oLW%?usPh~6#ioA4 zZeI@FW#W2I*<4-WCQSWYK5G_hlAV$)&j3gHTQ<`iX_7+CMb$hG+w?}wD>01q(CWsu zhi_{~VTPQ^w?+X;ipA>G+F&6GdV?AF_%d7O@~&c^>oB$t8JOn=W8378xKbpaco|p? 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z*+QHgE#o^XpUO|6KgB>P*TpU3r2AiT*x=xB;G_~!@_F6;C%~-6FmpNZ*!;4eqMQ;!l;7oI%fe$m$_e>J^+;@|`c7~;$OG@=6taTBMLE259o3fA6cR^B9gn<=@`~PZn zv`-HIYFGh>lE3)jEJ z#|!@Q?l1dy&c6@czjJgj{=oUq5&U<~|E`h0*UBH($iH{p@0<>j|FZ{we>}ib-u=H8 a#b36XBEpkc4FDiLUE5F6bs6a|>wf^h6Eb=L literal 0 HcmV?d00001 diff --git a/last-will-plugin/__init__.py b/last-will-plugin/__init__.py new file mode 100644 index 0000000..683c469 --- /dev/null +++ b/last-will-plugin/__init__.py @@ -0,0 +1,5 @@ +from electroncash.i18n import _ + +fullname = 'last-will-plugin' +description = _('Plugin last-will-plugin') +available_for = ['qt'] diff --git a/last-will-plugin/last_will_contract.py b/last-will-plugin/last_will_contract.py new file mode 100644 index 0000000..45e7577 --- /dev/null +++ b/last-will-plugin/last_will_contract.py @@ -0,0 +1,121 @@ +from ecdsa.ecdsa import curve_secp256k1, generator_secp256k1 +from electroncash.bitcoin import ser_to_point, point_to_ser +from electroncash.address import Address, Script, hash160, ScriptOutput +import hashlib +from .op_codes import OpCodes +import time +LOCKTIME_THRESHOLD = 500000000 + +def joinbytes(iterable): + """Joins an iterable of bytes and/or integers into a single byte string""" + return b''.join((bytes((x,)) if isinstance(x,int) else x) for x in iterable) + +class LastWillContract: + """Contract for making coins that can only be spent on BCH chains supporting + OP_CHECKDATASIGVERIFY, with backup clause for recovering dust on non-supporting + chains.""" + def __init__(self, master_privkey): + G = generator_secp256k1 + order = G.order() + # hard derivation (irreversible): + x = int.from_bytes(hashlib.sha512(b'Split1' + master_privkey.to_bytes(32, 'big')).digest(), 'big') + self.priv1 = 1 + (x % (order-1)) + self.pub1ser = point_to_ser(self.priv1 * G, True) + self.keypairs = {self.pub1ser.hex() : (self.priv1.to_bytes(32, 'big'), True)} + + + + days=0.04 + self.seconds= int(time.time()) + int(days * 24 * 60 * 60) + seconds_bytes=format_time(self.seconds) + + self.redeemscript = joinbytes([ + len(seconds_bytes), seconds_bytes, OpCodes.OP_CHECKLOCKTIMEVERIFY, + OpCodes.OP_DROP, + len(self.pub1ser), self.pub1ser, + OpCodes.OP_CHECKSIG ]) + + print(len(self.redeemscript)) + # assert 76< len(self.redeemscript) <= 255 # simplify push in scriptsig; note len is around 200. + self.address = Address.from_multisig_script(self.redeemscript) + self.dummy_scriptsig_redeem = '01'*(74 + len(self.redeemscript)) # make dummy scripts of correct size for size estimation. + + + def makeinput(self, prevout_hash, prevout_n, value): + """ + Construct an unsigned input for adding to a transaction. scriptSig is + set to a dummy value, for size estimation. + + (note: Transaction object will fail to broadcast until you sign and run `completetx`) + """ + + scriptSig = self.dummy_scriptsig_redeem + pubkey = self.pub1ser + + txin = dict( + prevout_hash = prevout_hash, + prevout_n = prevout_n, + sequence = 0, + scriptSig = scriptSig, + + type = 'unknown', + address = self.address, + scriptCode = self.redeemscript.hex(), + num_sig = 1, + signatures = [None], + x_pubkeys = [pubkey.hex()], + value = value, + ) + return txin + + def signtx(self, tx): + """generic tx signer for compressed pubkey""" + tx.sign(self.keypairs) + + def completetx(self, tx): + """ + Completes transaction by creating scriptSig. You need to sign the + transaction before using this (see `signtx`). `secret` may be bytes + (if redeeming) or None (if refunding). + + This works on multiple utxos if needed. + """ + + for txin in tx.inputs(): + # find matching inputs + if txin['address'] != self.address: + continue + sig = txin['signatures'][0] + if not sig: + continue + sig = bytes.fromhex(sig) + if txin['scriptSig'] == self.dummy_scriptsig_redeem: + script = [ + len(sig), sig, + len(self.redeemscript), self.redeemscript, # Script shorter than 75 bits + ] + txin['scriptSig'] = joinbytes(script).hex() + # need to update the raw, otherwise weird stuff happens. + tx.raw = tx.serialize() + + + +def format_time(seconds): + + print("Transaction Locktime in seconds: "+ str(seconds)) + print("Current time: "+ str(time.time())) + + assert seconds >= LOCKTIME_THRESHOLD + assert seconds < 0x8000000000 + + if seconds < 0x80000000: + # until year 2038 use 4 byte form + time_bytes = seconds.to_bytes(4, 'little') + else: + # from 2038 onwards our number cannot fit into 4 bytes since the high + # bit is used for sign, in bitcoin script. + time_bytes = seconds.to_bytes(5, 'little') + + assert time_bytes[-1] != 0 and not time_bytes[-1] & 0x80 + return time_bytes +# The transaction was rejected because it contians a non-mandatory script verify flag. \ No newline at end of file diff --git a/last-will-plugin/op_codes.py b/last-will-plugin/op_codes.py new file mode 100644 index 0000000..b3e4b6f --- /dev/null +++ b/last-will-plugin/op_codes.py @@ -0,0 +1,23 @@ +from electroncash.enum import Enumeration + +OpCodes = Enumeration("OpCodes", [ + ("OP_0", 0), ("OP_PUSHDATA1",76), "OP_PUSHDATA2", "OP_PUSHDATA4", "OP_1NEGATE", "OP_RESERVED", + "OP_1", "OP_2", "OP_3", "OP_4", "OP_5", "OP_6", "OP_7", + "OP_8", "OP_9", "OP_10", "OP_11", "OP_12", "OP_13", "OP_14", "OP_15", "OP_16", + "OP_NOP", "OP_VER", "OP_IF", "OP_NOTIF", "OP_VERIF", "OP_VERNOTIF", "OP_ELSE", "OP_ENDIF", "OP_VERIFY", + "OP_RETURN", "OP_TOALTSTACK", "OP_FROMALTSTACK", "OP_2DROP", "OP_2DUP", "OP_3DUP", "OP_2OVER", "OP_2ROT", "OP_2SWAP", + "OP_IFDUP", "OP_DEPTH", "OP_DROP", "OP_DUP", "OP_NIP", "OP_OVER", "OP_PICK", "OP_ROLL", "OP_ROT", + "OP_SWAP", "OP_TUCK", "OP_CAT", "OP_SPLIT", "OP_NUM2BIN", "OP_BIN2NUM", "OP_SIZE", "OP_INVERT", "OP_AND", + "OP_OR", "OP_XOR", "OP_EQUAL", "OP_EQUALVERIFY", "OP_RESERVED1", "OP_RESERVED2", "OP_1ADD", "OP_1SUB", "OP_2MUL", + "OP_2DIV", "OP_NEGATE", "OP_ABS", "OP_NOT", "OP_0NOTEQUAL", "OP_ADD", "OP_SUB", "OP_MUL", "OP_DIV", + "OP_MOD", "OP_LSHIFT", "OP_RSHIFT", "OP_BOOLAND", "OP_BOOLOR", + "OP_NUMEQUAL", "OP_NUMEQUALVERIFY", "OP_NUMNOTEQUAL", "OP_LESSTHAN", + "OP_GREATERTHAN", "OP_LESSTHANOREQUAL", "OP_GREATERTHANOREQUAL", "OP_MIN", "OP_MAX", + "OP_WITHIN", "OP_RIPEMD160", "OP_SHA1", "OP_SHA256", "OP_HASH160", + "OP_HASH256", "OP_CODESEPARATOR", "OP_CHECKSIG", "OP_CHECKSIGVERIFY", "OP_CHECKMULTISIG", + "OP_CHECKMULTISIGVERIFY", + ("OP_NOP1", 0xB0), + "OP_CHECKLOCKTIMEVERIFY", "OP_CHECKSEQUENCEVERIFY", + "OP_NOP4", "OP_NOP5", "OP_NOP6", "OP_NOP7", "OP_NOP8", "OP_NOP9", "OP_NOP10", + "OP_CHECKDATASIG", "OP_CHECKDATASIGVERIFY", +]) \ No newline at end of file diff --git a/last-will-plugin/qt.py b/last-will-plugin/qt.py new file mode 100644 index 0000000..6701fe6 --- /dev/null +++ b/last-will-plugin/qt.py @@ -0,0 +1,102 @@ +from PyQt5.QtGui import * +from PyQt5.QtCore import * +from PyQt5.QtWidgets import * +import electroncash.version +from electroncash.i18n import _ +from electroncash.plugins import BasePlugin, hook + + +class Plugin(BasePlugin): + electrumcash_qt_gui = None + # There's no real user-friendly way to enforce this. So for now, we just calculate it, and ignore it. + is_version_compatible = True + + def __init__(self, parent, config, name): + BasePlugin.__init__(self, parent, config, name) + self.network=None + self.wallet_windows = {} + self.lw_tabs = {} + self.lw_tab = {} + def fullname(self): + return 'Last Will' + + def description(self): + return _("Plugin Last Will") + + def is_available(self): + if self.is_version_compatible is None: + version = float(electroncash.version.PACKAGE_VERSION) + self.is_version_compatible = version >= MINIMUM_ELECTRON_CASH_VERSION + return True + + + def on_close(self): + """ + BasePlugin callback called when the wallet is disabled among other things. + """ + for window in list(self.wallet_windows.values()): + self.close_wallet(window.wallet) + + @hook + def update_contact(self, address, new_entry, old_entry): + print("update_contact", address, new_entry, old_entry) + + @hook + def delete_contacts(self, contact_entries): + print("delete_contacts", contact_entries) + + @hook + def init_qt(self, qt_gui): + """ + Hook called when a plugin is loaded (or enabled). + """ + self.electrumcash_qt_gui = qt_gui + # We get this multiple times. Only handle it once, if unhandled. + if len(self.wallet_windows): + return + # These are per-wallet windows. + for window in self.electrumcash_qt_gui.windows: + self.load_wallet(window.wallet, window) + + @hook + def load_wallet(self, wallet, window): + """ + Hook called when a wallet is loaded and a window opened for it. + """ + wallet_name = window.wallet.basename() + self.wallet_windows[wallet_name] = window + self.add_ui_for_wallet(wallet_name, window) + self.refresh_ui_for_wallet(wallet_name) + + + @hook + def close_wallet(self, wallet): + + wallet_name = wallet.basename() + window = self.wallet_windows[wallet_name] + del self.wallet_windows[wallet_name] + self.remove_ui_for_wallet(wallet_name, window) + + + def add_ui_for_wallet(self, wallet_name, window): + from .ui import Intro + l = Intro(window, self, wallet_name, address=None) + tab = window.create_list_tab(l) + self.lw_tabs[wallet_name] = tab + self.lw_tab[wallet_name] = l + window.tabs.addTab(tab, QIcon(":icons/preferences.png"), _('Last Will')) + + def remove_ui_for_wallet(self, wallet_name, window): + wallet_tab = self.lw_tabs.get(wallet_name, None) + if wallet_tab is not None: + del self.lw_tab[wallet_name] + del self.lw_tabs[wallet_name] + i = window.tabs.indexOf(wallet_tab) + window.tabs.removeTab(i) + + + def refresh_ui_for_wallet(self, wallet_name): + wallet_tab = self.lw_tabs[wallet_name] + wallet_tab.update() + wallet_tab = self.lw_tab[wallet_name] + wallet_tab.update() diff --git a/last-will-plugin/ui.py b/last-will-plugin/ui.py new file mode 100644 index 0000000..adcea94 --- /dev/null +++ b/last-will-plugin/ui.py @@ -0,0 +1,382 @@ +from PyQt5.QtCore import * +from PyQt5.QtGui import * +from PyQt5.QtWidgets import * +import webbrowser +from .last_will_contract import LastWillContract +from electroncash.address import Address, Script, hash160, ScriptOutput +from electroncash.transaction import Transaction,TYPE_ADDRESS +import electroncash.web as web + +from electroncash.i18n import _ +from electroncash_gui.qt.util import * +from electroncash.wallet import Multisig_Wallet +from electroncash.util import print_error, print_stderr, NotEnoughFunds +from electroncash_gui.qt.transaction_dialog import show_transaction + + +class Intro(QDialog, MessageBoxMixin): + def __init__(self, parent, plugin, wallet_name, address): + QDialog.__init__(self, parent) + self.main_window = parent + self.wallet=parent.wallet + self.plugin = plugin + self.wallet_name = wallet_name + self.config = parent.config + vbox = QVBoxLayout() + self.setLayout(vbox) + hbox = QHBoxLayout() + l = QLabel("%s"%(_("Manage my Last Will:"))) + vbox.addWidget(l) + vbox.addLayout(hbox) + + b = QPushButton(_("Create new Last Will contract")) + b.clicked.connect(lambda : self.switch_to(Creating)) + hbox.addWidget(b) + + b = QPushButton(_("Bump existing Last Will contract")) + #b.clicked.connect() + hbox.addWidget(b) + l = QLabel("%s"%(_("Claim money:"))) + vbox.addWidget(l) + hbox = QHBoxLayout() + vbox.addLayout(hbox) + b = QPushButton(_("End my contract")) + hbox.addWidget(b) + b = QPushButton(_("Receive Inheritance")) + hbox.addWidget(b) + vbox.addStretch(1) + + + def switch_to(self,mode): + l = mode(self.main_window, self.plugin, self.wallet_name, address=None) + tab = self.main_window.create_list_tab(l) + i=self.main_window.tabs.indexOf(self.plugin.lw_tabs.get(self.wallet_name,None)) + + self.plugin.lw_tabs[self.wallet_name] = tab + self.plugin.lw_tab[self.wallet_name] = l + self.main_window.tabs.addTab(tab, QIcon(":icons/preferences.png"), _('Last Will2')) + self.main_window.tabs.removeTab(i) + + + + + + +class Creating(QDialog, MessageBoxMixin): + search_done_signal = pyqtSignal(object) + + + def __init__(self, parent, plugin, wallet_name, address): + QDialog.__init__(self, parent) + self.main_window = parent + self.wallet=parent.wallet + self.plugin = plugin + self.wallet_name = wallet_name + self.config = parent.config + self.password=None + if self.wallet.has_password(): + self.main_window.show_error(_("Last Will requires password. It will get access to your private keys.")) + self.password = parent.password_dialog() + if not self.password: + return + + if address: + self.fund_domain = [address] + self.fund_change_address = address + self.default_redeem_address = address + self.entropy_address = address + else: + self.fund_domain = None + self.fund_change_address = None + self.default_redeem_address = self.wallet.get_unused_address() + self.entropy_address = self.wallet.get_addresses()[0] + if not self.default_redeem_address: + # self.wallet.get_unused_address() returns None for imported privkey wallets. + self.main_window.show_error(_("For imported private key wallets, please open the coin splitter from the Addresses tab by right clicking on an address, instead of via the Tools menu.")) + return + + # Extract private key + index = self.wallet.get_address_index(self.entropy_address) + + key = self.wallet.keystore.get_private_key(index,self.password) + privkey = int.from_bytes(key[0], 'big') + + if isinstance(self.wallet, Multisig_Wallet): + self.main_window.show_error( + "Multi-sig wallet support is partial.\nThe splitter coin itself is *not* multisig and belongs to you alone (it cannot be redeemed by other parties).") + + # + # TWORZYMY KONTRAKT + # + + self.contract = LastWillContract(privkey) + + + self.setWindowTitle(_("Last Will Plugin")) + + vbox = QVBoxLayout() + self.setLayout(vbox) + l = QLabel(_("Master address") + ": " + self.entropy_address.to_ui_string()) + l.setTextInteractionFlags(Qt.TextSelectableByMouse) + vbox.addWidget(l) + + l = QLabel(_("Last Will contract address") + ": " + self.contract.address.to_ui_string()) + l.setTextInteractionFlags(Qt.TextSelectableByMouse) + vbox.addWidget(l) + + hbox = QHBoxLayout() + vbox.addLayout(hbox) + + + b = QPushButton(_("View your Last Will contract")) + b.clicked.connect(self.showscript) + hbox.addWidget(b) + + hbox.addStretch(1) + + + l = QLabel("%s"%(_("Contract finding:"))) + vbox.addWidget(l) + + hbox = QHBoxLayout() + vbox.addLayout(hbox) + + b = QPushButton(_("Create Last Will contract")) + b.clicked.connect(self.fund) + hbox.addWidget(b) + self.fund_button = b + + b = QPushButton("x") + b.clicked.connect(self.search) + hbox.addWidget(b) + self.search_button = b + + hbox.addStretch(1) + + + grid = QGridLayout() + vbox.addLayout(grid) + + l = QLabel(_("TXID")) + grid.addWidget(l, 0, 0) + + l = QLabel(_("Out#")) + grid.addWidget(l, 0, 1) + + l = QLabel(_("Value (sats)")) + grid.addWidget(l, 0, 2) + + self.fund_txid_e = QLineEdit() + self.fund_txid_e.textEdited.connect(self.changed_coin) + grid.addWidget(self.fund_txid_e, 1, 0) + + self.fund_txout_e = QLineEdit() + self.fund_txout_e.setMaximumWidth(40) + self.fund_txout_e.setAlignment(Qt.AlignRight) + self.fund_txout_e.textEdited.connect(self.changed_coin) + grid.addWidget(self.fund_txout_e, 1, 1) + + self.fund_value_e = QLineEdit() + self.fund_value_e.setMaximumWidth(70) + self.fund_value_e.setAlignment(Qt.AlignRight) + self.fund_value_e.textEdited.connect(self.changed_coin) + grid.addWidget(self.fund_value_e, 1, 2) + + + l = QLabel("%s"%(_("Splittable coin spending:"))) + vbox.addWidget(l) + + self.option1_rb = QRadioButton(_("Only spend splittable coin")) + self.option2_rb = QRadioButton(_("")) + self.option1_rb.setChecked(True) + vbox.addWidget(self.option1_rb) + + if self.fund_change_address: + self.option2_rb.setText(_("Combine with all coins from address") + " %.10s..."%(self.fund_change_address.to_ui_string())) + self.option2_rb.setChecked(True) + else: + self.option2_rb.setHidden(True) + + + hbox = QHBoxLayout() + vbox.addLayout(hbox) + l = QLabel(_("Output to:")) + hbox.addWidget(l) + self.redeem_address_e = QLineEdit() + self.redeem_address_e.setText(self.default_redeem_address.to_full_ui_string()) + hbox.addWidget(self.redeem_address_e) + + + hbox = QHBoxLayout() + vbox.addLayout(hbox) + + b = QPushButton(_("Redeem with split (CDS chain only)")) + b.clicked.connect(lambda: self.spend()) + hbox.addWidget(b) + self.redeem_button = b + + + self.changed_coin() + + self.search_done_signal.connect(self.search_done) + self.search() + + self.show() + + def showscript(self, ): + if not self.contract: + return + script = self.contract.redeemscript + schex = script.hex() + + try: + sco = ScriptOutput(script) + decompiled = sco.to_ui_string() + except: + decompiled = "decompiling error" + + d = QDialog(self) + d.setWindowTitle(_('Split contract script')) + d.setMinimumSize(610, 490) + + layout = QGridLayout(d) + + script_bytes_e = QTextEdit() + layout.addWidget(QLabel(_('Bytes')), 1, 0) + layout.addWidget(script_bytes_e, 1, 1) + script_bytes_e.setText(schex) + script_bytes_e.setReadOnly(True) + # layout.setRowStretch(2,3) + + decompiled_e = QTextEdit() + layout.addWidget(QLabel(_('ASM')), 3, 0) + layout.addWidget(decompiled_e, 3, 1) + decompiled_e.setText(decompiled) + decompiled_e.setReadOnly(True) + # layout.setRowStretch(3,1) + + hbox = QHBoxLayout() + + b = QPushButton(_("Close")) + b.clicked.connect(d.accept) + hbox.addWidget(b) + + layout.addLayout(hbox, 4, 1) + d.show() + + def changed_coin(self, ): + # if any of the txid/out#/value changes + try: + txid = bytes.fromhex(self.fund_txid_e.text()) + assert len(txid) == 32 + prevout_n = int(self.fund_txout_e.text()) + value = int(self.fund_value_e.text()) + except: + self.redeem_button.setDisabled(True) + else: + self.redeem_button.setDisabled(False) + + + def fund(self, ): + outputs = [(TYPE_ADDRESS, self.contract.address, 1000)] + try: + tx = self.wallet.mktx(outputs, self.password, self.config, + domain=self.fund_domain, change_addr=self.fund_change_address) + except NotEnoughFunds: + return self.show_critical(_("Not enough balance to fund smart contract.")) + except Exception as e: + return self.show_critical(repr(e)) + for i, out in enumerate(tx.outputs()): + if out[1] == self.contract.address: + self.fund_txout_e.setText(str(i)) + self.fund_value_e.setText(str(out[2])) + break + else: + raise RuntimeError("Created tx is incorrect!") + self.fund_txid_e.setText(tx.txid()) + self.fund_txid_e.setCursorPosition(0) + show_transaction(tx, self.main_window, + "Make contract", + prompt_if_unsaved=True) + self.changed_coin() + + def spend(self): + prevout_hash = self.fund_txid_e.text() + prevout_n = int(self.fund_txout_e.text()) + value = int(self.fund_value_e.text()) + locktime = self.contract.seconds + estimate_fee = lambda x: (1 * x) + out_addr = Address.from_string(self.redeem_address_e.text()) + + # generate the special spend + inp = self.contract.makeinput(prevout_hash, prevout_n, value) + + inputs = [inp] + invalue = value + + # add on other spends + if self.option1_rb.isChecked(): + domain = [] + else: + raise RuntimeError + + outputs = [(TYPE_ADDRESS, out_addr, 0)] + tx1 = Transaction.from_io(inputs, outputs, locktime) + txsize = len(tx1.serialize(True)) // 2 + fee = estimate_fee(txsize) + + outputs = [(TYPE_ADDRESS, out_addr, invalue - fee)] + tx = Transaction.from_io(inputs, outputs, locktime) + self.contract.signtx(tx) + self.wallet.sign_transaction(tx, self.password) + self.contract.completetx(tx) + + + desc = "Spend splittable coin (CDS chain only!)" + show_transaction(tx, self.main_window, + desc, + prompt_if_unsaved=True) + + def search(self, ): + self.search_button.setIcon(QIcon(":icons/status_waiting")) + self.search_button.setText(_("Searching...")) + self.search_button.setDisabled(True) + + self.wallet.network.send([("blockchain.scripthash.listunspent", + [self.contract.address.to_scripthash_hex()]), + ], + self.search_done_signal.emit) + + def search_done(self, response): + error = response.get('error') + result = response.get('result') + params = response.get('params') + + if result and not error: + # just grab first utxo + utxo = result[0] + self.fund_txid_e.setText(utxo['tx_hash']) + self.fund_txid_e.setCursorPosition(0) + self.fund_txout_e.setText(str(utxo['tx_pos'])) + self.fund_value_e.setText(str(utxo['value'])) + self.changed_coin() + self.search_button.setIcon(QIcon(":icons/tab_coins")) + self.search_button.setText(_("Found splittable coin!")) + self.search_button.setDisabled(True) + self.fund_button.setDisabled(True) + return + + if error: + self.show_error("Search request error: " + str(error)) + + self.search_button.setIcon(QIcon()) + self.search_button.setText(_("Find splittable coin")) + self.search_button.setDisabled(False) + def create_menu(self): + pass + + def on_delete(self): + pass + + def on_update(self): + pass \ No newline at end of file diff --git a/manifest.json b/manifest.json new file mode 100644 index 0000000..6deb7e0 --- /dev/null +++ b/manifest.json @@ -0,0 +1,11 @@ +{ + "display_name": "Last Will", + "version": "1.0", + "description": "Last Will", + "project_url": "https://github.com/KarolTrzeszczkowski/Electron-Cash-Plugin-Last Will/", + "minimum_ec_version": "3.2", + "package_name": "last-will-plugin", + "available_for": [ + "qt" + ] +}