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refactor(scripts): migrate IP limit state from JSON to MongoDB

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ReturnFI
2025-09-15 18:05:49 +00:00
parent fc55a394e8
commit c943596912
1 changed files with 67 additions and 149 deletions
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206
core/scripts/hysteria2/limit.sh
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@ -4,22 +4,22 @@ source /etc/hysteria/core/scripts/path.sh
# --- Configuration ---
SERVICE_NAME="hysteria-ip-limit.service"
DB_NAME="blitz_panel"
CONNECTIONS_COLLECTION="active_connections"
# Load configurations from .configs.env
if [ -f "$CONFIG_ENV" ]; then
source "$CONFIG_ENV"
BLOCK_DURATION="${BLOCK_DURATION:-60}" # Default to 60 seconds if not set
MAX_IPS="${MAX_IPS:-1}" # Default to 1 IP if not set
BLOCK_DURATION="${BLOCK_DURATION:-60}" # Default to 60 seconds
MAX_IPS="${MAX_IPS:-1}" # Default to 1 IP
grep -q "^BLOCK_DURATION=" "$CONFIG_ENV" || echo -e "\nBLOCK_DURATION=$BLOCK_DURATION" >> "$CONFIG_ENV"
grep -q "^MAX_IPS=" "$CONFIG_ENV" || echo "MAX_IPS=$MAX_IPS" >> "$CONFIG_ENV"
else
echo -e "BLOCK_DURATION=240\nMAX_IPS=5" > "$CONFIG_ENV"
fi
# --- Ensure files exist ---
[ ! -f "$CONNECTIONS_FILE" ] && echo "{}" > "$CONNECTIONS_FILE"
[ ! -f "$BLOCK_LIST" ] && touch "$BLOCK_LIST"
# --- Logging function ---
@ -29,69 +29,36 @@ log_message() {
echo "[$(date +"%Y-%m-%d %H:%M:%S")] [$level] $message"
}
# --- Function to update the JSON file with new connection data ---
update_json() {
# --- Add an IP to the database for a user ---
add_ip_to_db() {
local username="$1"
local ip_address="$2"
if command -v jq &>/dev/null; then
temp_file=$(mktemp)
jq --arg user "$username" --arg ip "$ip_address" \
'.[$user] += [$ip] | .[$user] |= unique' "$CONNECTIONS_FILE" > "$temp_file"
mv "$temp_file" "$CONNECTIONS_FILE"
else
if grep -q "\"$username\"" "$CONNECTIONS_FILE"; then
# Add IP to existing username (if it doesn't exist)
if ! grep -q "\"$username\".*\"$ip_address\"" "$CONNECTIONS_FILE"; then
sed -i -E "s/(\"$username\":\s*\[)([^\]]*)/\1\2,\"$ip_address\"/" "$CONNECTIONS_FILE"
fi
else
# Add new username with IP
sed -i -E "s/\{(.*)\}/{\1,\"$username\":[\"$ip_address\"]}/" "$CONNECTIONS_FILE"
fi
fi
log_message "INFO" "Updated JSON: Added $ip_address for user $username"
mongosh "$DB_NAME" --quiet --eval "
db.getCollection('$CONNECTIONS_COLLECTION').updateOne(
{ _id: '$username' },
{ \$addToSet: { ips: '$ip_address' } },
{ upsert: true }
);
"
log_message "INFO" "DB Update: Added $ip_address for user $username"
}
# --- Function to remove an IP from the JSON when client disconnects ---
remove_ip() {
# --- Remove an IP from the database for a user ---
remove_ip_from_db() {
local username="$1"
local ip_address="$2"
if [ ! -f "$CONNECTIONS_FILE" ]; then
log_message "ERROR" "JSON file does not exist"
return
fi
if grep -q "\"$username\"" "$CONNECTIONS_FILE"; then
if command -v jq &>/dev/null; then
temp_file=$(mktemp)
jq --arg user "$username" --arg ip "$ip_address" \
'.[$user] = (.[$user] | map(select(. != $ip)))' "$CONNECTIONS_FILE" > "$temp_file"
mv "$temp_file" "$CONNECTIONS_FILE"
# Check if the user's IP list is now empty and remove the user if so
temp_file_check=$(mktemp)
jq --arg user "$username" 'if .[$user] | length == 0 then del(.[$user]) else . end' "$CONNECTIONS_FILE" > "$temp_file_check"
mv "$temp_file_check" "$CONNECTIONS_FILE"
else
# Basic sed replacement (not as reliable as jq)
sed -i -E "s/\"$ip_address\"(,|\])|\1\"$ip_address\"/\1/g" "$CONNECTIONS_FILE"
sed -i -E "s/,\s*\]/\]/g" "$CONNECTIONS_FILE"
sed -i -E "s/\[\s*,/\[/g" "$CONNECTIONS_FILE"
# VERY Basic check if user's IP list is empty and remove the user if so (less reliable)
if grep -q "\"$username\":\s*\[\s*\]" "$CONNECTIONS_FILE"; then
sed -i "/\"$username\":\s*\[\s*\][,\s]*/d" "$CONNECTIONS_FILE"
sed -i "s/,\s*\}$/\n}/" "$CONNECTIONS_FILE" # Remove trailing comma if it exists after user deletion
fi
fi
log_message "INFO" "Updated JSON: Removed $ip_address for user $username"
else
log_message "WARN" "User $username not found in JSON"
fi
mongosh "$DB_NAME" --quiet --eval "
db.getCollection('$CONNECTIONS_COLLECTION').updateOne(
{ _id: '$username' },
{ \$pull: { ips: '$ip_address' } }
);
db.getCollection('$CONNECTIONS_COLLECTION').deleteMany(
{ _id: '$username', ips: { \$size: 0 } }
);
"
log_message "INFO" "DB Update: Removed $ip_address for user $username"
}
# --- Block an IP using iptables and track it ---
@ -100,18 +67,13 @@ block_ip() {
local username="$2"
local unblock_time=$(( $(date +%s) + BLOCK_DURATION ))
# Skip if already blocked
if iptables -C INPUT -s "$ip_address" -j DROP 2>/dev/null; then
log_message "INFO" "IP $ip_address is already blocked"
return
fi
# Add to iptables
iptables -I INPUT -s "$ip_address" -j DROP
# Add to block list with expiration time
echo "$ip_address,$username,$unblock_time" >> "$BLOCK_LIST"
log_message "WARN" "Blocked IP $ip_address for user $username for $BLOCK_DURATION seconds"
}
@ -119,41 +81,31 @@ block_ip() {
unblock_ip() {
local ip_address="$1"
# Remove from iptables if exists
if iptables -C INPUT -s "$ip_address" -j DROP 2>/dev/null; then
iptables -D INPUT -s "$ip_address" -j DROP
log_message "INFO" "Unblocked IP $ip_address"
fi
# Remove from block list
sed -i "/$ip_address,/d" "$BLOCK_LIST"
}
# --- Block all IPs for a user ---
block_all_user_ips() {
local username="$1"
local ips=()
# Get all IPs for this user
if command -v jq &>/dev/null; then
readarray -t ips < <(jq -r --arg user "$username" '.[$user][]' "$CONNECTIONS_FILE" 2>/dev/null)
else
# Basic extraction without jq (less reliable)
ip_list=$(grep -oP "\"$username\":\s*\[\K[^\]]*" "$CONNECTIONS_FILE")
IFS=',' read -ra ip_entries <<< "$ip_list"
for entry in "${ip_entries[@]}"; do
# Extract IP from the JSON array entry
ip=$(echo "$entry" | grep -oP '".*"' | tr -d '"' | tr -d '[:space:]')
if [[ -n "$ip" ]]; then
ips+=("$ip")
fi
done
local ips_json
ips_json=$(mongosh "$DB_NAME" --quiet --eval "
JSON.stringify(db.getCollection('$CONNECTIONS_COLLECTION').findOne({_id: '$username'}, {_id: 0, ips: 1}))
")
if [[ -z "$ips_json" || "$ips_json" == "null" ]]; then
log_message "INFO" "No IPs to block for user $username"
return
fi
# Block all IPs for this user
local ips
readarray -t ips < <(echo "$ips_json" | jq -r '.ips[]')
for ip in "${ips[@]}"; do
ip=${ip//\"/} # Remove quotes
ip=$(echo "$ip" | tr -d '[:space:]') # Remove whitespace
if [[ -n "$ip" ]]; then
block_ip "$ip" "$username"
fi
@ -167,7 +119,6 @@ check_expired_blocks() {
local current_time=$(date +%s)
local ip username expiry
# Check each line in the block list
while IFS=, read -r ip username expiry || [ -n "$ip" ]; do
if [[ -n "$ip" && -n "$expiry" ]]; then
if (( current_time >= expiry )); then
@ -181,44 +132,22 @@ check_expired_blocks() {
# --- Check if a user has exceeded the IP limit ---
check_ip_limit() {
local username="$1"
local ips=()
local is_unlimited="false"
if [ -f "$USERS_FILE" ]; then
if command -v jq &>/dev/null; then
is_unlimited=$(jq -r --arg user "$username" '.[$user].unlimited_user // "false"' "$USERS_FILE" 2>/dev/null)
else
if grep -q "\"$username\"" "$USERS_FILE" && \
grep -A 5 "\"$username\"" "$USERS_FILE" | grep -q '"unlimited_user": true'; then
is_unlimited="true"
fi
fi
fi
local is_unlimited
is_unlimited=$(mongosh "$DB_NAME" --quiet --eval "
db.users.findOne({_id: '$username'}, {_id: 0, unlimited_user: 1})?.unlimited_user || false;
")
if [ "$is_unlimited" = "true" ]; then
if [ "$is_unlimited" == "true" ]; then
log_message "INFO" "User $username is exempt from IP limit. Skipping check."
return
fi
# Get all IPs for this user
if command -v jq &>/dev/null; then
readarray -t ips < <(jq -r --arg user "$username" '.[$user][]' "$CONNECTIONS_FILE" 2>/dev/null)
else
# Basic extraction without jq (less reliable)
ip_list=$(grep -oP "\"$username\":\s*\[\K[^\]]*" "$CONNECTIONS_FILE")
IFS=',' read -ra ip_entries <<< "$ip_list"
for entry in "${ip_entries[@]}"; do
# Extract IP from the JSON array entry
ip=$(echo "$entry" | grep -oP '".*"' | tr -d '"' | tr -d '[:space:]')
if [[ -n "$ip" ]]; then
ips+=("$ip")
fi
done
fi
local ip_count
ip_count=$(mongosh "$DB_NAME" --quiet --eval "
db.getCollection('$CONNECTIONS_COLLECTION').findOne({_id: '$username'})?.ips?.length || 0;
")
ip_count=${#ips[@]}
# If the user has more IPs than allowed, block ALL their IPs
if (( ip_count > MAX_IPS )); then
log_message "WARN" "User $username has $ip_count IPs (max: $MAX_IPS) - blocking all IPs"
block_all_user_ips "$username"
@ -228,29 +157,25 @@ check_ip_limit() {
# --- Parse log lines for connections and disconnections ---
parse_log_line() {
local log_line="$1"
local ip_address=""
local username=""
local ip_address
local username
# Extract IP address and username
ip_address=$(echo "$log_line" | grep -oP '"addr": "([^:]+)' | cut -d'"' -f4)
username=$(echo "$log_line" | grep -oP '"id": "([^">]+)' | cut -d'"' -f4)
if [[ -n "$username" && -n "$ip_address" ]]; then
if echo "$log_line" | grep -q "client connected"; then
# Check if this IP is in the block list
if grep -q "^$ip_address," "$BLOCK_LIST"; then
log_message "WARN" "Rejected connection from blocked IP $ip_address for user $username"
# Make sure the IP is still blocked in iptables
if ! iptables -C INPUT -s "$ip_address" -j DROP 2>/dev/null; then
iptables -I INPUT -s "$ip_address" -j DROP
fi
else
update_json "$username" "$ip_address"
add_ip_to_db "$username" "$ip_address"
check_ip_limit "$username"
fi
elif echo "$log_line" | grep -q "client disconnected"; then
remove_ip "$username" "$ip_address"
# Note: We don't unblock on disconnect - only on block expiration
remove_ip_from_db "$username" "$ip_address"
fi
fi
}
@ -259,9 +184,9 @@ parse_log_line() {
install_service() {
cat <<EOF > /etc/systemd/system/${SERVICE_NAME}
[Unit]
Description=Hysteria2 IP Limiter
After=network.target hysteria-server.service
Requires=hysteria-server.service
Description=Hysteria2 IP Limiter (MongoDB version)
After=network.target hysteria-server.service mongod.service
Requires=hysteria-server.service mongod.service
[Service]
Type=simple
@ -319,19 +244,20 @@ change_config() {
fi
}
# --- Check if running as root ---
# --- Startup Checks ---
if [[ $EUID -ne 0 ]]; then
echo "Error: This script must be run as root for iptables functionality."
echo "Error: This script must be run as root."
exit 1
fi
if ! command -v mongosh &>/dev/null; then
log_message "ERROR" "'mongosh' is not installed or not in PATH. This script requires the MongoDB Shell."
exit 1
fi
# --- Check for jq and warn if not available ---
if ! command -v jq &>/dev/null; then
log_message "WARN" "'jq' is not installed. JSON handling may be less reliable."
log_message "WARN" "Consider installing jq with: apt install jq (for Debian/Ubuntu)"
log_message "WARN" "'jq' is not installed. JSON parsing for blocking might fail."
fi
# --- Command execution based on arguments ---
# --- Command execution ---
case "$1" in
start)
install_service
@ -343,13 +269,9 @@ case "$1" in
change_config "$2" "$3"
;;
run)
log_message "INFO" "Monitoring Hysteria server connections. Max IPs per user: $MAX_IPS"
log_message "INFO" "Block duration: $BLOCK_DURATION seconds"
log_message "INFO" "Connection data saved to: $CONNECTIONS_FILE"
log_message "INFO" "Press Ctrl+C to exit"
log_message "INFO" "Monitoring Hysteria connections. Max IPs: $MAX_IPS, Block Duration: $BLOCK_DURATION s"
log_message "INFO" "--------------------------------------------------------"
# Background process to check for expired blocks every 10 seconds
(
while true; do
check_expired_blocks
@ -358,17 +280,13 @@ case "$1" in
) &
CHECKER_PID=$!
# Cleanup function
cleanup() {
log_message "INFO" "Stopping IP limiter..."
kill $CHECKER_PID 2>/dev/null
exit 0
}
# Set trap for cleanup
trap cleanup SIGINT SIGTERM
# Monitor log for connections and disconnections
journalctl -u hysteria-server.service -f | while read -r line; do
if echo "$line" | grep -q "client connected\|client disconnected"; then
parse_log_line "$line"