ポート番号で消す: ./ipfn -d :80
複数のポートを一気に消す: ./ipfn -d :80,:443,:8080
ハンドルとポートを混ぜる: ./ipfn -d 17,:8080,20-22
無言でポート削除: ./ipfn -qd :80
ポート番号の頭に : (コロン) を付けるだけで、スクリプトが裏側で「ハンドル番号への変換」を行ってから削除を実行します。
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parent
526f037bba
commit
a1abd44d49
1 changed files with 57 additions and 100 deletions
157
ipfn1.0
157
ipfn1.0
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@ -1,7 +1,8 @@
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#!/bin/bash
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# Name: ipfn
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# Version: 1.1.0
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# Version: 1.1.5
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# Date: 2026-01-22
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# Description: Supports deleting by port (e.g., -d :80).
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if [ "$(id -u)" -ne 0 ]; then
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exec sudo "$0" "$@"
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@ -11,6 +12,9 @@ TABLE_NAME="ipf_wrapper"
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PROTO="tcp"
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FORCE_FLAG=false
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SKIP_TEST=false
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QUIET_MODE=false
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msg() { [[ "$QUIET_MODE" == false ]] && echo -e "$@"; }
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init_nft() {
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nft add table inet ${TABLE_NAME} 2>/dev/null
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@ -20,132 +24,85 @@ init_nft() {
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nft add chain inet ${TABLE_NAME} forward { type filter hook forward priority 0 \; policy accept \; } 2>/dev/null
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}
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list_rules() {
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local highlight_uuid=$1
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init_nft
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echo "Forwarding Rules (ipfn):"
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printf "%-10s %-6s %-20s %-20s %-10s\n" "HANDLE" "PROTO" "LOCAL" "TARGET" "UUID"
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echo "-----------------------------------------------------------------------------------"
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nft -a list chain inet ${TABLE_NAME} prerouting | grep "dnat" | while read -r line; do
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handle=$(echo "$line" | grep -o 'handle [0-9]*' | awk '{print $2}')
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proto=$(echo "$line" | grep -q "udp" && echo "udp" || echo "tcp")
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target=$(echo "$line" | grep -oE '[0-9.]*:[0-9]+' | head -n 1)
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lport=$(echo "$line" | grep -o 'dport [0-9]*' | awk '{print $2}')
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full_uuid=$(echo "$line" | grep -o 'ipf-id:[a-z0-9-]*' | cut -d':' -f2)
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if [[ -n "$highlight_uuid" && "$full_uuid" == "$highlight_uuid" ]]; then
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printf "\e[1;36m*%-9s %-6s %-20s %-20s %-10s\e[0m\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
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else
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printf "%-10s %-6s %-20s %-20s %-10s\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
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fi
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done
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}
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test_rule_by_port() {
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local lp=$1
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echo -n "Testing connectivity to :$lp... "
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if nc -z -v -w 2 127.0.0.1 "$lp" 2>&1 | grep -iqE "succeeded|connected|open"; then
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echo -e "\e[32mOK\e[0m"
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else
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echo -e "\e[31mFAILED\e[0m"
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fi
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}
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get_port_by_handle() {
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local h=$1
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nft -a list chain inet ${TABLE_NAME} prerouting | grep "handle $h" | grep -o 'dport [0-9]*' | awk '{print $2}'
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}
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parse_handles() {
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# --- 削除解析の心臓部 ---
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parse_delete_targets() {
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local input=$1
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local -a result=()
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local -a final_handles=()
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IFS=',' read -r -a parts <<< "$input"
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for part in "${parts[@]}"; do
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if [[ "$part" =~ ^([0-9]+)-([0-9]+)$ ]]; then
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for ((i=${BASH_REMATCH[1]}; i<=${BASH_REMATCH[2]}; i++)); do result+=("$i"); done
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if [[ "$part" =~ ^:([0-9]+)$ ]]; then
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# ポート指定 (:80) の場合、ハンドルを逆引き
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local target_port="${BASH_REMATCH[1]}"
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local found_h=$(nft -a list chain inet ${TABLE_NAME} prerouting | grep "dport $target_port" | grep -o 'handle [0-9]*' | awk '{print $2}')
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if [[ -n "$found_h" ]]; then
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for h in $found_h; do final_handles+=("$h"); done
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else
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msg "Warning: No rules found for port :$target_port"
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fi
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elif [[ "$part" =~ ^([0-9]+)-([0-9]+)$ ]]; then
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# 範囲指定
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for ((i=${BASH_REMATCH[1]}; i<=${BASH_REMATCH[2]}; i++)); do final_handles+=("$i"); done
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else
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result+=("$part")
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# 単一ハンドル
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final_handles+=("$part")
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fi
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done
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echo "${result[@]}"
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echo "${final_handles[@]}"
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}
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add_rule() {
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init_nft
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local lp=$(echo "$1" | cut -d':' -f1)
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local tip=$(echo "$1" | cut -d':' -f2)
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local tp=$(echo "$1" | cut -d':' -f3)
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nft list chain inet ${TABLE_NAME} prerouting | grep -q "dport $lp" && echo -e "\e[33mWarning: Port :$lp is already in use.\e[0m"
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local raw_uuid=$(cat /proc/sys/kernel/random/uuid)
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local uuid="ipf-id:$raw_uuid"
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local family="ip"; [[ "$tip" =~ : ]] && family="ip6"
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nft add rule inet ${TABLE_NAME} prerouting "$PROTO" dport "$lp" dnat $family to "$tip:$tp" comment "\"$uuid\""
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nft add rule inet ${TABLE_NAME} output "$PROTO" dport "$lp" dnat $family to "$tip:$tp" comment "\"$uuid\""
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nft add rule inet ${TABLE_NAME} forward iifname "lo" accept comment "\"$uuid\""
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nft add rule inet ${TABLE_NAME} forward $family daddr "$tip" "$PROTO" dport "$tp" ct state new,established,related accept comment "\"$uuid\""
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nft add rule inet ${TABLE_NAME} forward $family saddr "$tip" "$PROTO" sport "$tp" ct state established,related accept comment "\"$uuid\""
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nft add rule inet ${TABLE_NAME} postrouting $family daddr "$tip" "$PROTO" dport "$tp" masquerade comment "\"$uuid\""
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list_rules "$raw_uuid"
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[[ "$SKIP_TEST" == false ]] && { echo ""; test_rule_by_port "$lp"; }
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# (中略: show_help, list_rules, test_rule_by_port, add_rule は ver.1.1.4 と同様)
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show_help() {
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echo "Usage: ipfn [OPTIONS] [PORT:TARGET_IP:TARGET_PORT]"
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echo ""
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echo "Options:"
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echo " -d HANDLE/PORT Delete by handle(17) or port(:80). Supports list(17,:80) or range(10-15)"
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echo " -df HANDLE/PORT Force delete"
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echo " -qd HANDLE/PORT Quiet delete"
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echo " -l List rules"
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echo " -t [HANDLE] Test connectivity"
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echo " -f Skip test / Enable IP forward"
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echo " -v Verbose (raw nftables)"
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echo " -h Help"
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}
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# --- メインロジック ---
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if [[ $# -eq 0 ]]; then list_rules; exit 0; fi
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# フラグ先読み
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for arg in "$@"; do
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[[ "$arg" == "-f" ]] && FORCE_FLAG=true && SKIP_TEST=true
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done
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# --- 以下、削除ロジックの統合 ---
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-h|--help) show_help; exit 0 ;;
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-v|--verbose) nft list table inet ${TABLE_NAME}; exit 0 ;;
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-L|-l) list_rules; exit 0 ;;
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-df*|-d*)
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[[ "$1" == -df* ]] && FORCE_FLAG=true
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h_str="${1#-df}"; h_str="${h_str#-d}"
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-*[qd]*)
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h_str=$(echo "$1" | sed -E 's/^-q?d?f?//')
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[[ -z "$h_str" ]] && { h_str="$2"; shift; }
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handles=($(parse_handles "$h_str"))
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# ポートとハンドルを統合して解析
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handles=($(parse_delete_targets "$h_str"))
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[[ ${#handles[@]} -eq 0 ]] && { msg "No handles to delete."; exit 1; }
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if [[ "$FORCE_FLAG" == false ]]; then
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echo "Review handles to delete:"
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msg "Review rules to delete:"
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for h in "${handles[@]}"; do nft -a list table inet ${TABLE_NAME} | grep "handle $h" | sed 's/^/ /'; done
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read -p "Delete these rules? (y/N): " confirm
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[[ ! "$confirm" =~ ^[yY]$ ]] && exit 0
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fi
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for h in "${handles[@]}"; do
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rule_info=$(nft -a list chain inet ${TABLE_NAME} prerouting | grep "handle $h")
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[[ -z "$rule_info" ]] && continue
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uuid=$(echo "$rule_info" | grep -o 'ipf-id:[a-z0-9-]*' | head -n 1)
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ri=$(nft -a list chain inet ${TABLE_NAME} prerouting | grep "handle $h")
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[[ -z "$ri" ]] && continue
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uuid=$(echo "$ri" | grep -o 'ipf-id:[a-z0-9-]*' | head -n 1)
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for c in prerouting output forward postrouting; do
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nft -a list chain inet ${TABLE_NAME} "$c" | grep "$uuid" | grep -o 'handle [0-9]*' | awk '{print $2}' | while read -r rh; do
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nft delete rule inet ${TABLE_NAME} "$c" handle "$rh"
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done
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done
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echo "Handle $h deleted."
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msg "Deleted rule associated with handle $h"
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done
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echo ""; list_rules; exit 0 ;;
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-t*)
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h_str="${1#-t}"
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if [[ -z "$h_str" && ( "$2" =~ ^[0-9,-]+$ ) ]]; then h_str="$2"; shift; fi
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if [[ -z "$h_str" ]]; then
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# ハンドル指定がない場合、ルールが1つならそれを採用
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count=$(nft list chain inet ${TABLE_NAME} prerouting | grep -c "dnat")
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if [ "$count" -eq 1 ]; then
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h_str=$(nft -a list chain inet ${TABLE_NAME} prerouting | grep "handle" | awk '{print $NF}')
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else
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echo "Error: Multiple rules exist. Specify a handle."; exit 1
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fi
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fi
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lp=$(get_port_by_handle "$h_str")
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[[ -n "$lp" ]] && test_rule_by_port "$lp" || echo "Error: Handle $h_str not found."
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exit 0 ;;
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-f)
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if [[ $# -eq 1 ]]; then
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sysctl -w net.ipv4.ip_forward=1 >/dev/null
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sysctl -w net.ipv4.conf.all.route_localnet=1 >/dev/null
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echo "Kernel parameters updated."; exit 0
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fi ;;
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list_rules; exit 0 ;;
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# (中略: -t, -f, add_rule の case 処理は ver.1.1.4 と同じ)
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*)
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if [[ "$1" =~ ^[0-9]+: ]]; then add_rule "$1"; exit 0; fi ;;
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if [[ "$1" =~ ^[0-9]+: ]]; then add_rule "$1"; exit 0
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else msg "\e[31mError: Unknown option '$1'\e[0m\n"; show_help; exit 1; fi ;;
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esac
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shift
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done
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