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(android) Add screen to recover funds from channel's outpoint (#644)
This is a debug tool to fix funds that have been accidentally sent to a channel's address.
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239 changes: 239 additions & 0 deletions
239
...oid/src/main/kotlin/fr/acinq/phoenix/android/settings/channels/SpendFromChannelAddress.kt
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| /* | ||
| * Copyright 2024 ACINQ SAS | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package fr.acinq.phoenix.android.settings.channels | ||
|
|
||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.PaddingValues | ||
| import androidx.compose.foundation.layout.Row | ||
| import androidx.compose.foundation.layout.Spacer | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.height | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.layout.width | ||
| import androidx.compose.material.MaterialTheme | ||
| import androidx.compose.material.Text | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.RectangleShape | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.compose.ui.res.stringResource | ||
| import androidx.compose.ui.text.input.KeyboardType | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.lifecycle.viewmodel.compose.viewModel | ||
| import fr.acinq.lightning.MilliSatoshi | ||
| import fr.acinq.phoenix.android.R | ||
| import fr.acinq.phoenix.android.business | ||
| import fr.acinq.phoenix.android.components.AmountInput | ||
| import fr.acinq.phoenix.android.components.Button | ||
| import fr.acinq.phoenix.android.components.Card | ||
| import fr.acinq.phoenix.android.components.DefaultScreenHeader | ||
| import fr.acinq.phoenix.android.components.DefaultScreenLayout | ||
| import fr.acinq.phoenix.android.components.FilledButton | ||
| import fr.acinq.phoenix.android.components.ProgressView | ||
| import fr.acinq.phoenix.android.components.TextInput | ||
| import fr.acinq.phoenix.android.components.feedback.ErrorMessage | ||
| import fr.acinq.phoenix.android.utils.copyToClipboard | ||
| import fr.acinq.phoenix.data.BitcoinUnit | ||
|
|
||
| @Composable | ||
| fun SpendFromChannelAddress( | ||
| onBackClick: () -> Unit, | ||
| ) { | ||
| val vm = viewModel<SpendFromChannelAddressViewModel>(factory = SpendFromChannelAddressViewModel.Factory(business)) | ||
| val state = vm.state.value | ||
|
|
||
| var amount by remember { mutableStateOf<MilliSatoshi?>(null) } | ||
| var txIndex by remember { mutableStateOf("") } | ||
| var channelData by remember { mutableStateOf("") } | ||
| var remoteFundingPubkey by remember { mutableStateOf("") } | ||
| var unsignedTx by remember { mutableStateOf("") } | ||
|
|
||
| DefaultScreenLayout { | ||
| DefaultScreenHeader(onBackClick = onBackClick, title = stringResource(id = R.string.spendchanneladdress_title)) | ||
| Card(internalPadding = PaddingValues(16.dp)) { | ||
| Text(text = stringResource(id = R.string.spendchanneladdress_instructions)) | ||
| Spacer(modifier = Modifier.height(24.dp)) | ||
|
|
||
| // amount | ||
| AmountInput( | ||
| amount = amount, | ||
| onAmountChange = { | ||
| if (it?.amount != amount) vm.resetState() | ||
| amount = it?.amount | ||
| }, | ||
| staticLabel = stringResource(id = R.string.spendchanneladdress_amount), | ||
| forceUnit = BitcoinUnit.Sat, | ||
| enabled = state.canProcess, | ||
| ) | ||
| Spacer(modifier = Modifier.height(16.dp)) | ||
|
|
||
| // tx index | ||
| TextInput( | ||
| text = txIndex, | ||
| onTextChange = {newValue -> | ||
| if (newValue != txIndex) { vm.resetState() } | ||
| newValue.toLongOrNull()?.let { txIndex = newValue } | ||
| }, | ||
| staticLabel = stringResource(id = R.string.spendchanneladdress_tx_index), | ||
| minLines = 1, | ||
| maxLines = 1, | ||
| enabled = state.canProcess, | ||
| keyboardType = KeyboardType.Number | ||
| ) | ||
| Spacer(modifier = Modifier.height(16.dp)) | ||
|
|
||
| // encrypted channel data | ||
| TextInput( | ||
| text = channelData, | ||
| onTextChange = { | ||
| if (it != channelData) { vm.resetState() } | ||
| channelData = it | ||
| }, | ||
| staticLabel = stringResource(id = R.string.spendchanneladdress_channel_data), | ||
| minLines = 2, | ||
| maxLines = 4, | ||
| enabled = state.canProcess | ||
| ) | ||
| Spacer(modifier = Modifier.height(16.dp)) | ||
|
|
||
| // remote funding pubkey | ||
| TextInput( | ||
| text = remoteFundingPubkey, | ||
| onTextChange = { | ||
| if (it != remoteFundingPubkey) { vm.resetState() } | ||
| remoteFundingPubkey = it | ||
| }, | ||
| staticLabel = stringResource(id = R.string.spendchanneladdress_remote_funding_pubkey), | ||
| minLines = 1, | ||
| maxLines = 2, | ||
| enabled = state.canProcess | ||
| ) | ||
| Spacer(modifier = Modifier.height(16.dp)) | ||
|
|
||
| // unsigned tx | ||
| TextInput( | ||
| text = unsignedTx, | ||
| onTextChange = { | ||
| if (it != unsignedTx) { vm.resetState() } | ||
| unsignedTx = it | ||
| }, | ||
| staticLabel = stringResource(id = R.string.spendchanneladdress_unsigned_tx), | ||
| minLines = 1, | ||
| maxLines = 3, | ||
| enabled = state.canProcess | ||
| ) | ||
| } | ||
|
|
||
| Column( | ||
| modifier = Modifier.fillMaxWidth(), | ||
| horizontalAlignment = Alignment.CenterHorizontally, | ||
| ) { | ||
| when (state) { | ||
| is SpendFromChannelAddressViewState.Init, is SpendFromChannelAddressViewState.Error -> { | ||
| if (state is SpendFromChannelAddressViewState.Error) { | ||
| ErrorMessage( | ||
| header = stringResource(id = R.string.spendchanneladdress_error_generic), | ||
| details = when (state) { | ||
| is SpendFromChannelAddressViewState.Error.Generic -> state.cause.localizedMessage | ||
| is SpendFromChannelAddressViewState.Error.AmountMissing -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_amount) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.TxIndexMalformed -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_tx_index) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.ChannelDataMalformed -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_channel_data) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.ChannelDataDecryption -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_channel_data) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.ChannelDataUnhandledState -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_channel_data_state, state.stateClassName ?: "??") | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.ChannelDataUnhandledVersion -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_channel_data_version, state.version) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.PublicKeyMalformed -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_remote_funding_pubkey, state.details) | ||
| } | ||
| is SpendFromChannelAddressViewState.Error.TransactionMalformed -> { | ||
| stringResource(id = R.string.spendchanneladdress_error_tx, state.details) | ||
| } | ||
| }, | ||
| alignment = Alignment.CenterHorizontally | ||
| ) | ||
| } | ||
|
|
||
| Card { | ||
| FilledButton( | ||
| text = stringResource(id = R.string.spendchanneladdress_sign_button), | ||
| icon = R.drawable.ic_build, | ||
| onClick = { vm.spendFromChannelAddress(amount?.truncateToSatoshi(), txIndex.toLongOrNull(), channelData, remoteFundingPubkey, unsignedTx) }, | ||
| modifier = Modifier.fillMaxWidth(), | ||
| shape = RectangleShape | ||
| ) | ||
| } | ||
| } | ||
| is SpendFromChannelAddressViewState.Processing -> { | ||
| ProgressView(text = stringResource(id = R.string.spendchanneladdress_signing)) | ||
| } | ||
| is SpendFromChannelAddressViewState.SignedTransaction -> { | ||
| val context = LocalContext.current | ||
| Card { | ||
| Spacer(modifier = Modifier.height(8.dp)) | ||
| SigLabelValue(label = stringResource(id = R.string.spendchanneladdress_success_pubkey), value = state.pubkey.toHex()) | ||
| SigLabelValue(label = stringResource(id = R.string.spendchanneladdress_success_signature), value = state.signature.toHex()) | ||
| Spacer(modifier = Modifier.height(16.dp)) | ||
| Button( | ||
| text = stringResource(id = R.string.btn_copy), | ||
| icon = R.drawable.ic_copy, | ||
| modifier = Modifier.fillMaxWidth(), | ||
| onClick = { | ||
| copyToClipboard( | ||
| context = context, | ||
| data = """ | ||
| pubkey=${state.pubkey.toHex()} | ||
| signature=${state.signature.toHex()} | ||
| """.trimIndent(), | ||
| dataLabel = "channel outpoint spending data" | ||
| ) | ||
| } | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| Spacer(modifier = Modifier.height(80.dp)) | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| private fun SigLabelValue(label: String, value: String) { | ||
| Row( | ||
| modifier = Modifier.padding(PaddingValues(horizontal = 16.dp, vertical = 6.dp)), | ||
| horizontalArrangement = Arrangement.spacedBy(6.dp) | ||
| ) { | ||
| Text(text = label, style = MaterialTheme.typography.body2, modifier = Modifier.width(100.dp)) | ||
| Text(text = value) | ||
| } | ||
| } |
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