Script to finalize Nakamochi uSD/SSD

tools/finalize-nakamochi.sh

@@ -0,0 +1,123 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2064
+
+if [[ -z $2 ]]; then
+    echo "Usage: $(basename "$0") /dev/sdA2 /dev/sdB1 [/mnt/usd [/mnt/ssd]]"
+    echo "Where:"
+    echo "  /dev/sdA2   - uSD card root partition"
+    echo "  /dev/sdB1   - SSD data partition"
+    echo "  /mnt/usd    - uSD card mount point"
+    echo "  /mnt/ssd    - SSD mount point"
+    echo "Example: $(basename "$0") /dev/sdc2 /dev/sdd1"
+    exit 1
+fi
+
+if [[ $EUID -ne 0 ]]; then
+    echo "This script must be run as root (hint: use sudo)."
+    exit 1
+fi
+
+check_exists()
+{
+    command -v "$1" > /dev/null
+}
+
+if ! check_exists mkp224o; then
+    echo "Error: mkp224o is not installed."
+    exit 1
+fi
+
+USD_DEVICE="$1"
+SSD_DEVICE="$2"
+USD_MOUNT_POINT="${3:-/mnt/usd}"
+SSD_MOUNT_POINT="${4:-/mnt/ssd}"
+
+if [[ ! -b "$USD_DEVICE" ]]; then
+    echo "Error: $USD_DEVICE does not exist."
+    exit 1
+fi
+
+if [[ ! -b "$SSD_DEVICE" ]]; then
+    echo "Error: $SSD_DEVICE does not exist."
+    exit 1
+fi
+
+if [[ ! -d "$USD_MOUNT_POINT" ]]; then
+    echo "Creating mount point: $USD_MOUNT_POINT ..."
+    mkdir -p "$USD_MOUNT_POINT" || exit 1
+    echo "done."
+fi
+
+if [[ ! -d "$SSD_MOUNT_POINT" ]]; then
+    echo "Creating mount point: $SSD_MOUNT_POINT ..."
+    mkdir -p "$SSD_MOUNT_POINT" || exit 1
+    echo "done."
+fi
+
+echo -n "Mounting $USD_DEVICE to $USD_MOUNT_POINT ... "
+mount "$USD_DEVICE" "$USD_MOUNT_POINT" || exit 1
+echo "done."
+
+echo "Mounting $SSD_DEVICE to $SSD_MOUNT_POINT ..."
+mount "$SSD_DEVICE" "$SSD_MOUNT_POINT" || exit 1
+echo "done."
+
+# be sure to always umount, even if user presses Ctrl+C.
+# two traps are needed to guard against executing commands twice.
+trap "umount -l $USD_MOUNT_POINT ; umount -l $SSD_MOUNT_POINT" EXIT
+trap "exit 1" SIGINT SIGTERM
+
+# check SSD
+if [[ ! -d "$SSD_MOUNT_POINT"/tor/bitcoind ]]; then
+    echo "Error: $SSD_MOUNT_POINT/tor/bitcoind does not exist, is not a correctly prepared SSD."
+    exit 1
+fi
+
+# reduce reserved space on the SSD
+tune2fs -r 1000000 "$SSD_DEVICE"
+
+# generate 2 onion services, one for bitcoind and one for lnd
+echo -n "Generating onion services ... "
+onion_tmp_dir="$(mktemp -d)"
+mkp224o -d "$onion_tmp_dir" -n 1 b
+mkp224o -d "$onion_tmp_dir" -n 1 l
+echo "done."
+
+# copy the generated service directories to the SSD and fix user/group
+echo -n "Configuring onion services ... "
+cp -r "$onion_tmp_dir"/b* "$SSD_MOUNT_POINT"/tor/bitcoind
+cp -r "$onion_tmp_dir"/l* "$SSD_MOUNT_POINT"/tor/lnd
+onion_user_group="$(grep tor "$USD_MOUNT_POINT"/etc/passwd | cut -d: -f 3-4)"
+chown -R "$onion_user_group" "$SSD_MOUNT_POINT"/tor
+echo "done."
+
+# generate a bitcoin RPC auth
+rpcauth="$(python3 "$(dirname "$0")/rpcauth.py" rpc | grep rpcauth=)"
+if [[ -z $rpcauth ]]; then
+    echo "Error: failed to generate bitcoin RPC auth."
+    exit 1
+fi
+
+# modify bitcoin configuration
+echo -n "Finalizing bitcoin configuration ..."
+bitcoind_onion_hostname="$(cat "$SSD_MOUNT_POINT"/tor/bitcoind/hostname)"
+sed -i "s/^rpcauth=.*/$rpcauth/" "$USD_MOUNT_POINT"/home/bitcoind/mainnet.conf
+sed -i "s/\${hostname.onion}/$bitcoind_onion_hostname/g" "$USD_MOUNT_POINT"/home/bitcoind/mainnet.conf
+echo "done."
+
+# modify lnd configuration
+echo -n "Finalizing lnd configuration ..."
+lnd_onion_hostname="$(cat "$SSD_MOUNT_POINT"/tor/lnd/hostname)"
+sed -i "s/\${hostname.onion}/$lnd_onion_hostname/g" "$USD_MOUNT_POINT"/home/lnd/lnd.mainnet.conf
+echo "done."
+
+# fix bitcoin and lnd user/group on SSD to match uSD (just in case)
+echo -n "Checking / fixing bitcoin and lnd user/group on SSD ... "
+bitcoind_user_group="$(grep bitcoind "$USD_MOUNT_POINT"/etc/passwd | cut -d: -f 3-4)"
+chown -R "$bitcoind_user_group" "$SSD_MOUNT_POINT"/bitcoind
+lnd_user_group="$(grep lnd "$USD_MOUNT_POINT"/etc/passwd | cut -d: -f 3-4)"
+chown -R "$lnd_user_group" "$SSD_MOUNT_POINT"/lnd
+echo "done."
+
+sync
+echo "All DONE, Nakamochi uSD and SSD should be ready!"