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ricochet-send.sh
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#!/usr/bin/env bash
# shellcheck disable=SC1091
# shellcheck source=./inc.common.sh
. "$(dirname "$(readlink -m "$0")")/inc.common.sh"
if [ "$2" == "" ]; then
echo "Usage: $(basename "$0") [options] amount destination_address [hops [txfee [sleeptime_min [sleeptime_max [hop_confirmations [txfee_factor]]]]]]"
echo "Where:"
echo " amount - amount to send in BTC"
echo " destination_address - destination address"
echo " hops - number of hops (default: 5)"
echo " txfee - average transaction fee per kvB (default: \"estimatesmartfee 2\", currently $($(dirname "$(readlink -m "$0")")/estimatesmartfee.sh $bitcoin_cli_options 2) BTC)"
echo " sleeptime_min - minimum sleep time between hops in seconds (default: 10)"
echo " sleeptime_max - maximum sleep time between hops in seconds (default: 15)"
echo " hop_confirmations - minimum number of confirmations between hops (default: 0)"
echo " txfee_factor - variance around average transaction fee, e.g. 0.00002000 fee, 0.2 var = fee is between 0.00001600 and 0.00002400 (default: 0.3)"
exit
fi
check_multiwallet
amount=$1
address=$2
if ! is_valid_bitcoin_address "$address"; then
echoerr "Invalid Bitcoin address $address"
exit 1
fi
hops=5
sleeptime_min=10
sleeptime_max=15
if [ "$3" != "" ]; then
hops=$3
fi
if [ "$4" != "" ]; then
txfee="$4"
else
txfee="$($(dirname "$(readlink -m "$0")")/estimatesmartfee.sh $bitcoin_cli_options 2)"
fi
if [ "$6" != "" ]; then
sleeptime_min=$5
sleeptime_max=$6
elif [ "$5" != "" ]; then
sleeptime_min=$5
sleeptime_max=$5
fi
if [ "$7" != "" ]; then
hop_confirmations=$7
else
hop_confirmations=0
fi
if [ "$8" != "" ]; then
txfee_factor="$8"
else
txfee_factor="0.3"
fi
# Force minimum required fee
txfee_min="$(bc_float_calc "$txfee * (1 - $txfee_factor)")"
txfee_max="$(bc_float_calc "$txfee * (1 + $txfee_factor)")"
mempoolminfee="$(call_bitcoin_cli getmempoolinfo | jq_btc_float ".mempoolminfee")"
if is_btc_lt "$txfee_min" "$mempoolminfee"; then
echo "Feerate $txfee_min is below minimum mempool fee, raising minimum to $mempoolminfee"
txfee_min="$mempoolminfee"
fi
txfee_average="$(bc_float_calc "($txfee_min + $txfee_max) * 0.5")"
echo "Ricocheting $amount BTC to $address via $hops hops using average $txfee_average fee per kvB"
read -p "Is this ok? " -n 1 -r
echo
if ! [[ $REPLY =~ ^[Yy]$ ]]; then
exit
fi
PREPARE_START="$(date +%s.%N)"
# We use P2PKH addresses for ricochet hops for now, that's easer.
ricochet_addresses=()
for i in $(seq 1 $(( hops - 1 ))); do
# ricochet_addresses+=("$(call_bitcoin_cli getnewaddress)")
ricochet_addresses+=("$(getnewaddress_p2pkh)")
done
ricochet_addresses+=("$address")
# FixMe: TX size may vary depending on input and output address types
ricochet_tx_size=192
ricochet_fees=(
"$(randamount "$txfee_min" "$txfee_max")"
)
ricochet_fee_sum="0"
for i in $(seq 1 $(( hops - 1 ))); do
fee="$(randamount "$txfee_min" "$txfee_max")"
ricochet_fees+=("$fee")
ricochet_fee_sum="$(bc_float_calc "$ricochet_fee_sum + $fee")"
done
ricochet_fees+=("0")
send_amount=$(bc_float_calc "$amount + $ricochet_fee_sum")
#echo "Richochet addresses: ${ricochet_addresses[@]}"
#echo "Ricochet fees: ${ricochet_fees[@]}"
# Send out first transaction
echo -n "0: (wallet) -> ${ricochet_addresses[0]} ($send_amount) - "
call_bitcoin_cli settxfee "${ricochet_fees[0]}" > /dev/null
txid="$(call_bitcoin_cli sendtoaddress "${ricochet_addresses[0]}" "$send_amount")"
echo "$txid"
rawtx="$(show_tx_by_id "$txid")"
#echo "$rawtx"
vout_idx=""
idx=0
while read -u 3 -r vout_address; do
if [ "$vout_address" == "${ricochet_addresses[0]}" ]; then
vout_idx=$idx
value="$(echo "$rawtx" | jq -r ".vout[$vout_idx].value")"
if [ "$value" == "$send_amount" ]; then
prev_pubkey="$(echo "$rawtx" | jq -r ".vout[$vout_idx].scriptPubKey.hex")"
break
fi
fi
((idx++))
done 3< <(get_decoded_tx_addresses "$rawtx")
if [ "$prev_pubkey" == "" ]; then
echoerr "$rawtx"
echoerr "FATAL: Can't find the right vout in the first transaction, please fill a bug report!"
echoerr "Expecting $send_amount -> ${ricochet_addresses[0]}"
exit 1
fi
use_txid="$txid"
# Prepare and sign rest of transactions
echo "Preparing rest of transactions..."
signedtxes=()
for i in $(seq 1 $(( hops - 1 ))); do
send_amount="$(bc_float_calc "$send_amount - ${ricochet_fees[$i]}")"
echo -n "$i: ${ricochet_addresses[$(( i - 1 ))]} -> ${ricochet_addresses[$i]} ($send_amount) - "
rawtx="$(call_bitcoin_cli createrawtransaction "[{\"txid\":\"$use_txid\",\"vout\":$vout_idx}]" "{\"${ricochet_addresses[$i]}\":$send_amount}")"
privkey="$(call_bitcoin_cli dumpprivkey "${ricochet_addresses[$(( i - 1 ))]}")"
signedtx="$(signrawtransactionwithkey "$rawtx" "[\"$privkey\"]" "[{\"txid\":\"$use_txid\",\"vout\":$vout_idx,\"scriptPubKey\":\"$prev_pubkey\",\"amount\":$send_amount}]")"
decodedtx="$(call_bitcoin_cli decoderawtransaction "$signedtx")"
use_txid="$(echo "$decodedtx" | jq -r ".txid")"
signedtxes+=("$signedtx")
vout_idx=0
prev_pubkey="$(echo "$decodedtx" | jq -r ".vout[].scriptPubKey.hex")"
echo "$use_txid"
done
#printf '%s\n' "${signedtxes[@]}"
PREPARE_DURATION="$(echo "$(date +%s.%N) - $PREPARE_START" | bc)"
LANG=POSIX printf \
"Initial transaction preparing took %.6f seconds (you can lock wallet now)\n" \
"$PREPARE_DURATION"
# Broadcast transactions with delays
echo "Sending transactions..."
for i in $(seq 1 $(( hops - 1 ))); do
if [ "$hop_confirmations" != "0" ]; then
echo "Waiting for $hop_confirmations transaction confirmation(s)..."
wait_for_tx_confirmations "$txid" "$hop_confirmations"
fi
random_delay=$(( RANDOM % (sleeptime_max - sleeptime_min) + sleeptime_min ))
echo "Sleeping for $random_delay second(s)..."
sleep $random_delay
echo "$i: $(call_bitcoin_cli sendrawtransaction "${signedtxes[$(( i - 1 ))]}")"
txid="$(call_bitcoin_cli decoderawtransaction "${signedtxes[$(( i - 1 ))]}" | jq -r ".txid")"
done