215 lines
9.1 KiB
Bash
Executable file
215 lines
9.1 KiB
Bash
Executable file
#!/bin/bash
|
|
# Name: ipfn
|
|
# Version: 1.2.7
|
|
# Date: 2026-01-22
|
|
# Description: Fixed grep errors after 'all' delete and streamlined exit paths.
|
|
|
|
if [ "$(id -u)" -ne 0 ]; then
|
|
exec sudo "$0" "$@"
|
|
fi
|
|
|
|
TABLE_NAME="ipf_wrapper"
|
|
PROTO="tcp"
|
|
FORCE_FLAG=false
|
|
SKIP_TEST=false
|
|
QUIET_MODE=false
|
|
|
|
# --- 1. Utility & Core Setup ---
|
|
|
|
msg() { [[ "$QUIET_MODE" == false ]] && echo -e "$@"; }
|
|
|
|
init_nft() {
|
|
nft add table inet ${TABLE_NAME} 2>/dev/null
|
|
nft add chain inet ${TABLE_NAME} prerouting { type nat hook prerouting priority -100 \; } 2>/dev/null
|
|
nft add chain inet ${TABLE_NAME} output { type nat hook output priority -100 \; } 2>/dev/null
|
|
nft add chain inet ${TABLE_NAME} postrouting { type nat hook postrouting priority 100 \; } 2>/dev/null
|
|
nft add chain inet ${TABLE_NAME} forward { type filter hook forward priority 0 \; policy accept \; } 2>/dev/null
|
|
}
|
|
|
|
enable_forwarding() {
|
|
msg "Optimizing kernel parameters for VM/LXD/Docker..."
|
|
sysctl -w net.ipv4.ip_forward=1 >/dev/null
|
|
sysctl -w net.ipv6.conf.all.forwarding=1 >/dev/null
|
|
sysctl -w net.ipv4.conf.all.route_localnet=1 >/dev/null
|
|
sysctl -w net.bridge.bridge-nf-call-iptables=1 2>/dev/null
|
|
sysctl -w net.bridge.bridge-nf-call-ip6tables=1 2>/dev/null
|
|
msg "\e[32mForwarding and Bridge-NF enabled.\e[0m"
|
|
}
|
|
|
|
show_help() {
|
|
echo "Usage: ipfn [OPTIONS] [RULES]"
|
|
echo ""
|
|
echo "Options:"
|
|
echo " -l, -L List all rules"
|
|
echo " -d HANDLE/:PORT/all Delete by handle, port (:80), or '*' for all"
|
|
echo " -R Reset: Clear ALL rules immediately"
|
|
echo " -t [HANDLE / PORT:] Test connectivity (e.g., -t 33, -t 80: or -t :80)"
|
|
echo " -f Enable IP forward & Bridge tuning / Skip test"
|
|
echo " -q Quiet mode (No output, Auto-yes)"
|
|
echo " -h Show this help"
|
|
}
|
|
|
|
list_rules() {
|
|
[[ "$QUIET_MODE" == true ]] && return
|
|
local highlight_uuid=$1
|
|
init_nft
|
|
msg "Forwarding Rules (ipfn):"
|
|
printf "%-10s %-6s %-20s %-20s %-10s\n" "HANDLE" "PROTO" "LOCAL" "TARGET" "UUID"
|
|
echo "-----------------------------------------------------------------------------------"
|
|
nft -a list chain inet "${TABLE_NAME}" prerouting | grep "dnat" | while read -r line; do
|
|
handle=$(echo "$line" | grep -o 'handle [0-9]*' | awk '{print $2}')
|
|
proto=$(echo "$line" | grep -q "udp" && echo "udp" || echo "tcp")
|
|
target=$(echo "$line" | grep -oE '([0-9.]+|\[[0-9a-fA-F:]+\]):[0-9]+' | head -n 1)
|
|
lport=$(echo "$line" | grep -o 'dport [0-9]*' | awk '{print $2}')
|
|
full_uuid=$(echo "$line" | grep -o 'ipf-id:[a-z0-9-]*' | cut -d':' -f2)
|
|
if [[ -n "$highlight_uuid" && "$full_uuid" == "$highlight_uuid" ]]; then
|
|
printf "\e[1;36m*%-9s %-6s %-20s %-20s %-10s\e[0m\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
|
|
else
|
|
printf "%-10s %-6s %-20s %-20s %-10s\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
|
|
fi
|
|
done
|
|
}
|
|
|
|
test_rule_by_port() {
|
|
[[ "$QUIET_MODE" == true ]] && return
|
|
local lp=$1
|
|
echo -n "Testing connectivity to :$lp... "
|
|
if nc -z -v -w 2 127.0.0.1 "$lp" 2>&1 | grep -iqE "succeeded|connected|open"; then
|
|
echo -e "\e[32mOK\e[0m"
|
|
else
|
|
echo -e "\e[31mFAILED\e[0m"
|
|
fi
|
|
}
|
|
|
|
# --- 2. Deletion & Reset ---
|
|
|
|
validate_rule_handle() {
|
|
nft -a list chain inet "${TABLE_NAME}" prerouting | grep "handle $1" | grep -q "dnat"
|
|
}
|
|
|
|
all_clear() {
|
|
if [[ "$FORCE_FLAG" == false ]]; then
|
|
msg "\e[33mWarning: This will delete ALL forwarding rules.\e[0m"
|
|
read -p "Are you sure? (y/N): " confirm
|
|
[[ ! "$confirm" =~ ^[yY]$ ]] && exit 0
|
|
fi
|
|
nft delete table inet "${TABLE_NAME}" 2>/dev/null
|
|
init_nft
|
|
msg "All rules cleared successfully."
|
|
list_rules
|
|
exit 0 # 全削除したらここで終了
|
|
}
|
|
|
|
parse_delete_targets() {
|
|
local input="$1"
|
|
local -a final_handles=()
|
|
[[ "$input" == "*" || "$input" == "all" ]] && all_clear
|
|
IFS=',' read -r -a parts <<< "$input"
|
|
for part in "${parts[@]}"; do
|
|
if [[ "$part" =~ ^:([0-9]+)$ ]]; then
|
|
local target_port="${BASH_REMATCH[1]}"
|
|
local found_h=$(nft -a list chain inet "${TABLE_NAME}" prerouting | grep "dport $target_port" | grep -o 'handle [0-9]*' | awk '{print $2}')
|
|
for h in $found_h; do final_handles+=("$h"); done
|
|
elif [[ "$part" =~ ^([0-9]+)-([0-9]+)$ ]]; then
|
|
for ((i=${BASH_REMATCH[1]}; i<=${BASH_REMATCH[2]}; i++)); do
|
|
validate_rule_handle "$i" && final_handles+=("$i")
|
|
done
|
|
else
|
|
validate_rule_handle "$part" && final_handles+=("$part")
|
|
fi
|
|
done
|
|
echo "${final_handles[@]}"
|
|
}
|
|
|
|
# --- 3. Adding Logic ---
|
|
|
|
add_rule() {
|
|
init_nft
|
|
local raw_input="$1"
|
|
local lp tip tp
|
|
if [[ "$raw_input" =~ ^([0-9]+):([0-9\.]+):([0-9]+)$ ]]; then
|
|
lp=${BASH_REMATCH[1]}; tip=${BASH_REMATCH[2]}; tp=${BASH_REMATCH[3]}
|
|
elif [[ "$raw_input" =~ ^([0-9]+):([0-9]+)$ ]]; then
|
|
lp=${BASH_REMATCH[1]}; tip="127.0.0.1"; tp=${BASH_REMATCH[2]}
|
|
elif [[ "$raw_input" =~ ^([0-9]+)$ ]]; then
|
|
lp=${BASH_REMATCH[1]}; tip="127.0.0.1"; tp=${BASH_REMATCH[1]}
|
|
else
|
|
msg "\e[31mError: Invalid rule format '$raw_input'\e[0m"; exit 1
|
|
fi
|
|
local raw_uuid=$(cat /proc/sys/kernel/random/uuid)
|
|
local uuid="ipf-id:$raw_uuid"
|
|
local family="ip"; [[ "$tip" =~ : ]] && family="ip6"
|
|
nft add rule inet "${TABLE_NAME}" prerouting "$PROTO" dport "$lp" dnat $family to "$tip:$tp" comment "\"$uuid\""
|
|
nft add rule inet "${TABLE_NAME}" output "$PROTO" dport "$lp" dnat $family to "$tip:$tp" comment "\"$uuid\""
|
|
nft add rule inet "${TABLE_NAME}" forward $family daddr "$tip" "$PROTO" dport "$tp" ct state new,established,related accept comment "\"$uuid\""
|
|
nft add rule inet "${TABLE_NAME}" forward $family saddr "$tip" "$PROTO" sport "$tp" ct state established,related accept comment "\"$uuid\""
|
|
nft add rule inet "${TABLE_NAME}" forward iifname "lo" accept comment "\"$uuid\""
|
|
nft add rule inet "${TABLE_NAME}" postrouting $family daddr "$tip" "$PROTO" dport "$tp" masquerade comment "\"$uuid\""
|
|
list_rules "$raw_uuid"
|
|
[[ "$SKIP_TEST" == false ]] && { echo ""; test_rule_by_port "$lp"; }
|
|
}
|
|
|
|
# --- 4. Main Parsing ---
|
|
|
|
for arg in "$@"; do
|
|
[[ "$arg" =~ q ]] && QUIET_MODE=true && FORCE_FLAG=true && SKIP_TEST=true
|
|
[[ "$arg" =~ f ]] && FORCE_FLAG=true && SKIP_TEST=true
|
|
[[ "$arg" == "-R" ]] && RESET_MODE=true
|
|
done
|
|
|
|
if [[ "$RESET_MODE" == true ]]; then all_clear; fi
|
|
if [[ $# -eq 0 ]]; then list_rules; exit 0; fi
|
|
|
|
while [[ $# -gt 0 ]]; do
|
|
case "$1" in
|
|
-h|--help) show_help; exit 0 ;;
|
|
-v|--verbose) nft list table inet "${TABLE_NAME}"; exit 0 ;;
|
|
-L|-l) list_rules; exit 0 ;;
|
|
-f) enable_forwarding; [[ $# -eq 1 ]] && exit 0 ;;
|
|
-t*)
|
|
h_str="${1#-t}"
|
|
if [[ -z "$h_str" && -n "$2" ]]; then h_str="$2"; shift; fi
|
|
target_port=""
|
|
if [[ "$h_str" =~ ^:?([0-9]+):?$ ]]; then
|
|
target_port="${BASH_REMATCH[1]}"
|
|
elif [[ -n "$h_str" ]]; then
|
|
target_port=$(nft -a list chain inet "${TABLE_NAME}" prerouting | grep "handle $h_str" | grep -o 'dport [0-9]*' | awk '{print $2}')
|
|
else
|
|
count=$(nft list chain inet "${TABLE_NAME}" prerouting | grep -c "dnat")
|
|
if [ "$count" -eq 1 ]; then
|
|
target_port=$(nft -a list chain inet "${TABLE_NAME}" prerouting | grep "dnat" | grep -o 'dport [0-9]*' | awk '{print $2}')
|
|
fi
|
|
fi
|
|
[[ -n "$target_port" ]] && test_rule_by_port "$target_port" || msg "Error: Port/Handle not found."
|
|
exit 0 ;;
|
|
-*[d]*)
|
|
h_str=$(echo "$1" | sed -E 's/^-q?d?f?//')
|
|
[[ -z "$h_str" ]] && { h_str="$2"; shift; }
|
|
handles=($(parse_delete_targets "$h_str"))
|
|
[[ ${#handles[@]} -eq 0 ]] && { msg "No valid targets."; exit 1; }
|
|
if [[ "$FORCE_FLAG" == false ]]; then
|
|
msg "Review rules to delete (Top-level only):"
|
|
for h in "${handles[@]}"; do
|
|
nft -a list chain inet "${TABLE_NAME}" prerouting | grep "handle $h" | sed 's/^/ /'
|
|
done
|
|
read -p "Delete these rules and their sub-rules? (y/N): " confirm
|
|
[[ ! "$confirm" =~ ^[yY]$ ]] && exit 0
|
|
fi
|
|
for h in "${handles[@]}"; do
|
|
ri=$(nft -a list chain inet "${TABLE_NAME}" prerouting | grep "handle $h")
|
|
[[ -z "$ri" ]] && continue
|
|
uuid=$(echo "$ri" | grep -o 'ipf-id:[a-z0-9-]*' | head -n 1)
|
|
for c in prerouting output forward postrouting; do
|
|
nft -a list chain inet "${TABLE_NAME}" "$c" | grep "$uuid" | grep -o 'handle [0-9]*' | awk '{print $2}' | while read -r rh; do
|
|
nft delete rule inet "${TABLE_NAME}" "$c" handle "$rh"
|
|
done
|
|
done
|
|
msg "Deleted associated with handle $h"
|
|
done
|
|
list_rules; exit 0 ;;
|
|
*)
|
|
if [[ "$1" =~ ^[0-9] ]]; then add_rule "$1"; exit 0
|
|
else msg "\e[31mError: Unknown option '$1'\e[0m\n"; show_help; exit 1; fi ;;
|
|
esac
|
|
shift
|
|
done
|