### IP Validation Script Usage (Bash)

Source: https://context7.com/anthemaker/goodbots/llms.txt

Provides examples of using the `clean_ips.sh` script to clean a list of IPs by removing invalid entries and validating IPs inline. The script filters out invalid IP addresses.

```bash
# Clean a list of IPs, removing invalid entries
cat raw_ips.txt | ./.github/scripts/clean_ips.sh > cleaned_ips.txt

# Validate inline
echo "192.168.1.0/24" | ./.github/scripts/clean_ips.sh
# Output: 192.168.1.0/24

echo "invalid-ip" | ./.github/scripts/clean_ips.sh
# Output: (empty - invalid IP filtered out)
```

--------------------------------

### Fetch and Clean GoogleBot IPs (GitHub Actions YAML)

Source: https://context7.com/anthemaker/goodbots/llms.txt

An example GitHub Actions workflow step to fetch GoogleBot IP ranges from their official API, clean them using `clean_ips.sh`, sort uniquely, and save to a file. It uses `curl`, `jq`, and a local script.

```yaml
# Example: How GoogleBot IPs are fetched
- name: Fetch GoogleBot IPs
  run: |
    curl -s https://developers.google.com/search/apis/ipranges/googlebot.json | \
    jq -r '.prefixes[] | .ipv4Prefix // .ipv6Prefix' | \
    ./.github/scripts/clean_ips.sh | sort -u > iplists/googlebot.ips
```

--------------------------------

### Download and Use Combined IP Whitelist (Bash)

Source: https://context7.com/anthemaker/goodbots/llms.txt

Demonstrates how to download the complete IP whitelist using curl and then process it with iptables for firewall rules. Assumes the 'all.ips' file is available.

```bash
# Download the complete whitelist
curl -O https://raw.githubusercontent.com/[repo]/main/all.ips

# Use with iptables
while read ip; do
  iptables -A INPUT -s "$ip" -j ACCEPT
done < all.ips
```

--------------------------------

### Download Service-Specific IP Lists (Bash)

Source: https://context7.com/anthemaker/goodbots/llms.txt

Shows how to download IP lists for specific services, such as GoogleBot or Cloudflare, using curl. This allows for granular control over which IP ranges are whitelisted.

```bash
# Download only GoogleBot IPs
curl -O https://raw.githubusercontent.com/[repo]/main/iplists/googlebot.ips

# Download only Cloudflare IPs for CDN trust
curl -O https://raw.githubusercontent.com/[repo]/main/iplists/cloudflare.ips
```

--------------------------------

### Validate IPv4 Addresses (Bash)

Source: https://context7.com/anthemaker/goodbots/llms.txt

A bash function to validate IPv4 addresses and CIDR ranges. It checks the format and range of the IP address and the CIDR suffix. Returns 0 for valid and 1 for invalid.

```bash
# validate_ipv4() - Validates IPv4 addresses with optional CIDR suffix
# Returns 0 for valid, 1 for invalid
validate_ipv4() {
    local ip_cidr="$1"
    if [[ $ip_cidr =~ ^([0-9]{1,3}\.){3}[0-9]{1,3}(/[0-9]{1,2})?$ ]]; then
        IFS='/' read -r ip cidr <<< "$ip_cidr"
        IFS='.' read -r a b c d <<< "$ip"
        [[ $a -le 255 && $b -le 255 && $c -le 255 && $d -le 255 && (-z "$cidr" || ($cidr -ge 0 && $cidr -le 32)) ]]
        return $?
    fi
    return 1
}
```

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