Additional fragments to help filtering spam transactions and reduce sync fails

README.md

@@ -196,6 +196,9 @@ Available `BTCPAYGEN_ADDITIONAL_FRAGMENTS` currently are:
 * [opt-add-nostr-relay](docker-compose-generator/docker-fragments/opt-add-nostr-relay.yml) for [Nostr Relay](https://github.com/kukks/Nnostr).
 * [opt-add-cloudflared](docker-compose-generator/docker-fragments/opt-add-cloudflared.yml) to expose your local server on clearnet painlessly ([see documentation](docs/cloudflare-tunnel.md)).
 * [opt-add-torq](docker-compose-generator/docker-fragments/opt-add-torq.yml) to install [Torq](https://github.com/lncapital/torq) node management application. Requires LND.
+* [opt-btc-permitbaremultisig](docker-compose-generator/docker-fragments/opt-btc-permitbaremultisig.yml) to set permitmultisig parameter to false. This prevents the Bitcoin node to accept bare multisig transactions, which are non-common multisig transactions and can be used as a spam attack.
+
+
 
 You can also create your own [custom fragments](#how-can-i-customize-the-generated-docker-compose-file).
 

Tools/ManageFragments/README.md

@@ -0,0 +1,12 @@
+## Interactive script to manage BTCPAYGEN_ADDITIONAL_FRAGMENTS in Docker setup ##
+
+The tool:
+1. Shows the current active additional fragments for the BTCpay Docker
+2. Asks the user what they want to do between:
+   <br>a. Enables one or more fragments without the ones active
+   <br>b. Enables one or more fragments in addition to the existing environment variables by choosing from the list of available fragments
+   <br>c. Disables one or more fragments from the list of the current active additional fragments
+   <br>d. Cancels and does nothing.
+
+4. Asks the user to confirm
+5. Runs . ./btcpay-setup.sh

Tools/ManageFragments/manage-additional-fragments.sh

@@ -0,0 +1,105 @@
+#!/bin/bash
+
+cd "$(dirname "$0")/.."
+
+FRAGMENTS_DIR="docker-compose-generator/docker-fragments"
+AVAILABLE=($(ls "$FRAGMENTS_DIR" | sort))
+AVAILABLE=($(cd "$FRAGMENTS_DIR" && ls *.yml | sed 's/\.yml$//' | sort))
+ACTIVE=()
+IFS=";" read -ra ACTIVE <<< "$BTCPAYGEN_ADDITIONAL_FRAGMENTS"
+
+# Show current active fragments
+echo "🔍 Current active fragments:"
+if [[ -z "$BTCPAYGEN_ADDITIONAL_FRAGMENTS" ]]; then
+  echo "(none)"
+else
+  for frag in "${ACTIVE[@]}"; do
+    echo "  - $frag"
+  done
+fi
+echo ""
+
+# Show options
+echo "What would you like to do?"
+echo "1. Enable one or more fragments without the current ones"
+echo "2. Enable one or more fragments (add to current)"
+echo "3. Disable one or more fragments (remove from current)"
+echo "4. Cancel"
+read -p "Enter your choice [1-4]: " choice
+
+if [[ "$choice" == "4" ]]; then
+  echo "❌ Cancelled."
+  exit 0
+fi
+
+# Show available fragments with numbers
+echo ""
+echo "📦 Available fragments:"
+for i in "${!AVAILABLE[@]}"; do
+  printf "%2d. %s\n" $((i+1)) "${AVAILABLE[$i]}"
+done
+
+read -p $'\nEnter the numbers (comma-separated): ' input
+IFS=',' read -ra SELECTED <<< "$input"
+
+NEW_FRAGMENTS=()
+
+# Choice handling
+case "$choice" in
+  1)  # Add new fragments without the current ones
+    for i in "${SELECTED[@]}"; do
+      idx=$((i-1))
+      NEW_FRAGMENTS+=("${AVAILABLE[$idx]}")
+    done
+    ;;
+  2)  # Add selected fragments to the current ones
+    NEW_FRAGMENTS=("${ACTIVE[@]}")
+    for i in "${SELECTED[@]}"; do
+      idx=$((i-1))
+      frag="${AVAILABLE[$idx]}"
+      [[ ! " ${NEW_FRAGMENTS[*]} " =~ " $frag " ]] && NEW_FRAGMENTS+=("$frag")
+    done
+    ;;
+  3)  # Remove selected fragments
+    REMOVE=()
+    for i in "${SELECTED[@]}"; do
+      idx=$((i-1))
+      REMOVE+=("${AVAILABLE[$idx]}")
+    done
+    for frag in "${ACTIVE[@]}"; do
+      [[ ! " ${REMOVE[*]} " =~ " $frag " ]] && NEW_FRAGMENTS+=("$frag")
+    done
+    ;;
+  *)
+    echo "❌ Invalid choice."
+    exit 1
+    ;;
+esac
+
+# Generate the final string value for BTCPAYGEN_ADDITIONAL_FRAGMENTS
+FINAL_VALUE=$(IFS=";"; echo "${NEW_FRAGMENTS[*]}")
+echo -e "\n⚙️ New BTCPAYGEN_ADDITIONAL_FRAGMENTS value:\n$FINAL_VALUE"
+
+read -p $'\nProceed with this change and run btcpay-setup.sh? (y/N): ' confirm
+if [[ "$confirm" =~ ^[Yy]$ ]]; then
+  echo "✅ Running btcpay-setup.sh with updated fragments..."
+
+  # Persist the changes to /etc/profile.d/btcpay-env.sh
+  echo "export BTCPAYGEN_ADDITIONAL_FRAGMENTS=\"$FINAL_VALUE\"" > /etc/profile.d/btcpay-env.sh
+
+  # Create a temporary script to run btcpay-setup.sh with the updated fragments
+  TEMP_SCRIPT=$(mktemp)
+  cat > "$TEMP_SCRIPT" <<EOF
+#!/bin/bash
+export BTCPAYGEN_ADDITIONAL_FRAGMENTS="$FINAL_VALUE"
+cd "$(pwd)"
+. ./btcpay-setup.sh -i
+EOF
+
+  chmod +x "$TEMP_SCRIPT"
+  bash --login "$TEMP_SCRIPT"
+  rm -f "$TEMP_SCRIPT"
+else
+  echo "❌ Aborted."
+  exit 0
+fi

docker-compose-generator/docker-fragments/opt-btc-permitbaremultisig.yml

@@ -0,0 +1,9 @@
+version: "3"
+#  Filter bare multisig transactions
+
+services:
+  bitcoind:
+    environment:
+      BITCOIN_EXTRA_ARGS: |
+        permitbaremultisig=0
+