晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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sh-3ll 1.0
DIR:/proc/thread-self/root/proc/self/root/opt/cpguard/app/scripts/
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Current File : //proc/thread-self/root/proc/self/root/opt/cpguard/app/scripts/reset_iptables.sh
#!/bin/bash
#
# Selective CPGuard Firewall Reset Script
# Removes only CPGuard-related chains and sets without affecting other firewall rules
#

set -e

echo "Starting selective CPGuard firewall cleanup..."

# Function to check if command exists
command_exists() {
    command -v "$1" >/dev/null 2>&1
}

# Function to safely remove jump rules
remove_jump_rules() {
    local ipt="$1"
    local base_chain="$2"
    local target_chain="$3"

    # Check if base chain exists
    if ! $ipt -L "$base_chain" -n >/dev/null 2>&1; then
        return
    fi

    # Find and remove all jump rules to target chain
    while $ipt -C "$base_chain" -j "$target_chain" 2>/dev/null; do
        echo "  Removing jump from $base_chain to $target_chain"
        $ipt -D "$base_chain" -j "$target_chain" 2>/dev/null || true
    done
}

# Function to flush and delete cpg_ chains
cleanup_chains() {
    local ipt="$1"
    local ipt_name="$2"

    echo "Processing $ipt_name chains..."

    # Get list of all chains
    local chains=$($ipt -L -n 2>/dev/null | grep "^Chain cpg" | awk '{print $2}' || true)

    if [ -z "$chains" ]; then
        echo "  No cpg_ chains found in $ipt_name"
        return
    fi

    # First, remove all references (jump rules) to cpg_ chains from base chains
    for chain in $chains; do
        echo "  Removing references to chain: $chain"
        remove_jump_rules "$ipt" "INPUT" "$chain"
        remove_jump_rules "$ipt" "OUTPUT" "$chain"
        remove_jump_rules "$ipt" "FORWARD" "$chain"

        # Also check custom chains that might reference cpg_ chains
        local all_chains=$($ipt -L -n 2>/dev/null | grep "^Chain" | awk '{print $2}' | grep -v "^cpg" || true)
        for parent_chain in $all_chains; do
            # Remove any rules that jump to cpg_ chains
            while $ipt -L "$parent_chain" -n --line-numbers 2>/dev/null | grep -q "cpg"; do
                local line_num=$($ipt -L "$parent_chain" -n --line-numbers 2>/dev/null | grep "cpg" | head -1 | awk '{print $1}')
                if [ -n "$line_num" ]; then
                    echo "    Removing rule $line_num from $parent_chain"
                    $ipt -D "$parent_chain" "$line_num" 2>/dev/null || true
                else
                    break
                fi
            done
        done
    done

    # Now flush and delete the chains
    for chain in $chains; do
        echo "  Flushing chain: $chain"
        $ipt -F "$chain" 2>/dev/null || true

        echo "  Deleting chain: $chain"
        $ipt -X "$chain" 2>/dev/null || true
    done

    echo "  Completed $ipt_name chain cleanup"
}

# Function to destroy c_ prefixed ipsets
cleanup_ipsets() {
    if ! command_exists ipset; then
        echo "ipset not found, skipping ipset cleanup"
        return
    fi

    echo "Processing ipsets..."

    # Get list of all sets with c_ prefix
    local sets=$(ipset list -name 2>/dev/null | grep "^c_" || true)

    if [ -z "$sets" ]; then
        echo "  No c_ ipsets found"
        return
    fi

    # Destroy each set
    for set in $sets; do
        echo "  Destroying ipset: $set"
        ipset destroy "$set" 2>/dev/null || true
    done

    echo "  Completed ipset cleanup"
}

# Main cleanup process

# Clean up IPv4 iptables only
if command_exists iptables; then
    cleanup_chains "iptables" "iptables"
else
    echo "iptables not found, cannot proceed"
    exit 1
fi

# Clean up ipsets
cleanup_ipsets

echo ""
echo "Selective CPGuard firewall cleanup completed successfully!"
echo ""
echo "Summary:"
echo "  - Removed all IPv4 chains starting with 'cpg_'"
echo "  - Removed all ipsets starting with 'c_'"
echo "  - IPv6 and other firewall rules remain intact"