307 lines
No EOL
8.8 KiB
Bash
307 lines
No EOL
8.8 KiB
Bash
#!/usr/bin/env bash
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# ============================================
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# Rule File Parsing
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# ============================================
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function rule::is_base() {
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local name="${1:-}"
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[[ -f "$(ctx::rules::base)/${name}.rule" ]]
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}
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function rule::exists() {
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local name="${1:-}"
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local path
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path=$(json::find_rule_file "$(ctx::rules)" "$name")
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[[ -n "$path" ]]
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}
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function rule::require_assignable() {
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local name="${1:-}"
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if rule::is_base "$name"; then
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log::error "Cannot assign base rule '${name}' — base rules cannot be assigned directly"
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return 1
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fi
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}
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function rule::require_exists() {
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local name="${1:-}"
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if ! rule::exists "$name"; then
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log::error "Rule not found: ${name}"
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return 1
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fi
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}
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function rule::get() {
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local name="${1:-}" key="${2:-}"
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json::rule_resolve_field "$(ctx::rules)" "$name" "$key"
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}
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function rule::get_own() {
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local name="${1:-}" key="${2:-}"
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local file
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file=$(rule::path "$name") || return 0
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json::get_raw "$file" "$key"
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}
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function rule::get_resolved() {
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local name="${1:-}"
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json::rule_resolve "$(ctx::rules)" "$name"
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}
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function rule::path() {
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local name="${1:-}"
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local path
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path=$(json::find_rule_file "$(ctx::rules)" "$name")
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[[ -n "$path" ]] && echo "$path" || return 1
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}
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function rule::get_all() {
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local name="${1:-}"
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rule::get_resolved "$name"
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}
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function rule::is_applied() {
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local rule_name="${1:-}" client_ip="${2:-}"
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local first_port
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first_port=$(rule::get "$rule_name" "block_ports" | head -1)
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if [[ -n "$first_port" ]]; then
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local target port proto
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IFS=":" read -r target port proto <<< "$first_port"
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proto="${proto:-tcp}"
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fw::_forward_exists -s "$client_ip" -d "$target" \
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-p "$proto" --dport "$port" -j DROP
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return $?
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fi
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local first_ip
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first_ip=$(rule::get "$rule_name" "block_ips" | head -1)
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if [[ -n "$first_ip" ]]; then
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fw::_forward_exists -s "$client_ip" -d "$first_ip" -j DROP
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return $?
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fi
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local first_allow
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first_allow=$(rule::get "$rule_name" "allow_ports" | head -1)
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if [[ -n "$first_allow" ]]; then
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local target port proto
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IFS=":" read -r target port proto <<< "$first_allow"
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proto="${proto:-tcp}"
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fw::_forward_exists -s "$client_ip" -d "$target" \
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-p "$proto" --dport "$port" -j ACCEPT
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return $?
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fi
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return 1
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}
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# ============================================
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# Rule Application
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# ============================================
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function rule::apply() {
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local rule_name="${1:?rule_name required}"
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local client_ip="${2:?client_ip required}"
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local peer_name="${3:-}"
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rule::require_exists "$rule_name" || return 1
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if [[ -z "$peer_name" ]]; then
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peer_name=$(peers::find_by_ip "$client_ip")
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fi
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log::debug "rule::apply: peer_name=$peer_name ip=$client_ip"
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# Check if already applied
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if rule::is_applied "$rule_name" "$client_ip"; then
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log::wg "Rule '${rule_name}' already applied to: ${client_ip}"
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[[ -n "$peer_name" ]] && peers::set_meta "$peer_name" "rule" "$rule_name"
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return 0
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fi
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# Process block_ips
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while IFS= read -r block_ip; do
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[[ -z "$block_ip" ]] && continue
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fw::block_ip "$client_ip" "$block_ip"
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done < <(rule::get "$rule_name" "block_ips")
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# Process block_ports
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while IFS= read -r entry; do
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[[ -z "$entry" ]] && continue
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local target port proto
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IFS=":" read -r target port proto <<< "$entry"
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proto="${proto:-tcp}"
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fw::block_port "$client_ip" "$target" "$port" "$proto"
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done < <(rule::get "$rule_name" "block_ports")
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# Process allow_ips (inserted before blocks)
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while IFS= read -r allow_ip; do
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[[ -z "$allow_ip" ]] && continue
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fw::allow_ip "$client_ip" "$allow_ip"
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done < <(rule::get "$rule_name" "allow_ips")
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# Process allow_ports (highest priority)
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while IFS= read -r entry; do
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[[ -z "$entry" ]] && continue
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local target port proto
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IFS=":" read -r target port proto <<< "$entry"
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proto="${proto:-tcp}"
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fw::allow_port "$client_ip" "$target" "$port" "$proto"
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done < <(rule::get "$rule_name" "allow_ports")
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# Persist rule assignment
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[[ -n "$peer_name" ]] && peers::set_meta "$peer_name" "rule" "$rule_name"
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# DNS redirect
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local dns_redirect
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dns_redirect=$(rule::get "$rule_name" "dns_redirect")
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if [[ "$dns_redirect" == "true" ]]; then
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local peer_subnet
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peer_subnet=$(peers::get_ip "$peer_name" | cut -d'.' -f1-3)
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if ! fw::_nat_exists -i wg0 -s "${peer_subnet}.0/24" \
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-p udp --dport 53 -j DNAT \
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--to-destination "$(config::dns):53" 2>/dev/null; then
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rule::apply_dns_redirect "${peer_subnet}.0/24"
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log::debug "dns_redirect: applied for ${peer_subnet}.0/24"
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else
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log::debug "dns_redirect: already applied for ${peer_subnet}.0/24"
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fi
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fi
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log::debug "Applied rule '${rule_name}' to: ${client_ip}"
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}
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function rule::unapply() {
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local rule_name="${1:-}" client_ip="${2:-}"
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rule::require_exists "$rule_name" || return 1
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local peer_name
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peer_name=$(peers::find_by_ip "$client_ip")
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# Remove allow_ports first (reverse order of apply)
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while IFS= read -r entry; do
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[[ -z "$entry" ]] && continue
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local target port proto
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IFS=":" read -r target port proto <<< "$entry"
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proto="${proto:-tcp}"
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fw::unallow_port "$client_ip" "$target" "$port" "$proto"
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done < <(rule::get "$rule_name" "allow_ports")
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# Remove allow_ips
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while IFS= read -r allow_ip; do
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[[ -z "$allow_ip" ]] && continue
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fw::unallow_ip "$client_ip" "$allow_ip"
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done < <(rule::get "$rule_name" "allow_ips")
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# Remove block_ports
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while IFS= read -r entry; do
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[[ -z "$entry" ]] && continue
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local target port proto
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IFS=":" read -r target port proto <<< "$entry"
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proto="${proto:-tcp}"
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fw::unblock_port "$client_ip" "$target" "$port" "$proto"
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done < <(rule::get "$rule_name" "block_ports")
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# Remove block_ips
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while IFS= read -r block_ip; do
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[[ -z "$block_ip" ]] && continue
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fw::unblock_ip "$client_ip" "$block_ip"
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done < <(rule::get "$rule_name" "block_ips")
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# Remove DNS redirect if applicable
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local dns_redirect
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dns_redirect=$(rule::get "$rule_name" "dns_redirect")
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if [[ "$dns_redirect" == "true" ]]; then
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local subtype
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subtype=$(peers::get_meta "$peer_name" "subtype")
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local subnet
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if [[ -n "$subtype" ]]; then
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subnet=$(config::subnet_for "$subtype")
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else
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local peer_type
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peer_type=$(peers::get_type "$peer_name") || true
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[[ -z "$peer_type" ]] && peer_type="phone"
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subnet=$(config::subnet_for "$peer_type")
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fi
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rule::remove_dns_redirect "${subnet}.0/24"
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fi
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# Clear rule from meta
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[[ -n "$peer_name" ]] && peers::set_meta "$peer_name" "rule" ""
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log::debug "Removed rule '${rule_name}' from: ${client_ip}"
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}
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function rule::reapply_all() {
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local rule_name="${1:-}"
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rule::require_exists "$rule_name" || return 1
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local peers=()
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mapfile -t peers < <(peers::with_rule "$rule_name")
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[[ ${#peers[@]} -eq 0 ]] && return 0
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local count=0
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for peer_name in "${peers[@]}"; do
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local client_ip
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client_ip=$(peers::get_ip "$peer_name")
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[[ -z "$client_ip" ]] && continue
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rule::unapply "$rule_name" "$client_ip"
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rule::apply "$rule_name" "$client_ip" "$peer_name"
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(( count++ )) || true
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done
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log::wg_success "Rule '${rule_name}' re-applied to ${count} peers"
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}
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function rule::restore_all() {
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while IFS= read -r peer_name; do
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local rule_name
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rule_name=$(peers::get_meta "$peer_name" "rule")
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[[ -z "$rule_name" ]] && continue
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if ! rule::exists "$rule_name"; then
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log::wg_warning "Rule '${rule_name}' not found for peer '${peer_name}', skipping"
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continue
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fi
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local client_ip
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client_ip=$(peers::get_ip "$peer_name")
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[[ -z "$client_ip" ]] && continue
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rule::apply "$rule_name" "$client_ip"
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done < <(peers::all)
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log::wg "Rules restored for all peers"
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}
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# ============================================
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# DNS Redirect
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# ============================================
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function rule::apply_dns_redirect() {
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local client_subnet="${1:-}"
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local dns
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dns="$(config::dns)"
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iptables -t nat -A PREROUTING -i wg0 -s "$client_subnet" -p udp --dport 53 \
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! -d "$dns" -j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4
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iptables -t nat -A PREROUTING -i wg0 -s "$client_subnet" -p udp --dport 53 \
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-j DNAT --to-destination "${dns}:53"
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iptables -t nat -A PREROUTING -i wg0 -s "$client_subnet" -p tcp --dport 53 \
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-j DNAT --to-destination "${dns}:53"
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}
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function rule::remove_dns_redirect() {
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local client_subnet="${1:-}"
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local dns
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dns="$(config::dns)"
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iptables -t nat -D PREROUTING -i wg0 -s "$client_subnet" -p udp --dport 53 \
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! -d "$dns" -j LOG --log-prefix "wgctl-dns-redirect: " \
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--log-level 4 2>/dev/null || true
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iptables -t nat -D PREROUTING -i wg0 -s "$client_subnet" -p udp --dport 53 \
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-j DNAT --to-destination "${dns}:53" 2>/dev/null || true
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iptables -t nat -D PREROUTING -i wg0 -s "$client_subnet" -p tcp --dport 53 \
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-j DNAT --to-destination "${dns}:53" 2>/dev/null || true
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} |