caddyipinfofree

package module
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 Go to latest Published: Apr 25, 2024 License: MIT Imports: 23 Imported by: 0

README

Caddy      IPInfo

Caddy x IPInfo

This project does not affiliate with Caddy nor IPInfo. It only extends Caddy with custom code to integrate the free databases provided by IPInfo into Caddy. Logo Copyright belongs to the corresponding project.

Caddy IPInfo free

Easy country and ASN lookup by IP with the free IPInfo database.

This module is still in development. Breaking changes will likely come. No stability checks yet.

Example

{
    # Required as a third-party handler
    order ipinfo_free first
    # Configure module
    ipinfo_free__config {
        url https://ipinfo.io/data/free/country.mmdb?token=magicduck
        cron "10 16 * * *"
        path /tmp/caddy_ipinfo
    }
}

:8080 {
    ipinfo_free "{http.request.uri.query.ip}"

    header Content-Type text/plain
    respond <<TEXT
    IP: {ipinfo_free.ip}
                
    Country: {ipinfo_free.country_name} ({ipinfo_free.country})
    Continent: {ipinfo_free.continent_name} ({ipinfo_free.continent})
    ASN: {ipinfo_free.asn} {ipinfo_free.as_name} {ipinfo_free.as_domain}
    TEXT 200
}

$ curl "http://localhost:8080/?ip=1.1.1.1"
IP: 1.1.1.1
            
Country: Australia (AU)
Continent: Oceania (OC)
ASN: AS13335 Cloudflare, Inc. cloudflare.com

Why?

IPInfo distributes their country and ASN databases for free every 24h with full accuracy. With this module and a few lines of config in your Caddyfile, you can query the database anywhere with anything.

Usage

Build a custom binary with this module enabled.

CADDY_VERSION=master xcaddy build --with github.com/oltdaniel/caddy-ipinfo-free
./caddy run

Directives

ipinfo_free_global (global)
Examples
ipinfo_free_config https://ipinfo.io/data/free/country.mmdb?token=magicduck

ipinfo_free_config {
    url https://ipinfo.io/data/free/country.mmdb?token=magicduck
    cron "10 16 * * *"
    path /tmp/caddy_ipinfo
}
Values
Name Values Description
url valid ipinfo free database url This url can be easily found in the Dashboard of IPInfo after creating an account. Simply choose a database of your choice in the MMDB format and paste the url here.
cron valid crontab notation

Default: 10 16 * * *		 Customize how often you want to check for a new database. The official time is published by IPInfo in their FAQ here. Timezone is UTC.
path valid path to store the database

Default: os.TempDir() with directory caddy_ipinfo_free		 This will be the path where the databases are stored after download. As there are different kinds of databases, we only accept a path and not a specific filename. Each database will be stored here by their corresponding names from the configured url.

If the configured path does not exist, the directories will be created. If not path is given, a temporary directory will be created in the systems temporary directory with the name caddy_ipinfo_free.
ipinfo_free (handler)
Examples
ipinfo_free
ipinfo_free 1
ipinfo_free on
ipinfo_free true
ipinfo_free enabled
ipinfo_free forwarded
ipinfo_free trusted
ipinfo_free "{http.request.uri.query.ip}"
Values Description
disabled, false, off, 0 Explicit disabling of looking up ip information.
enabled, true, on, 1, strict, empty The remote address of the request will be used to lookup the ip information.
forwarded Use the IP set in the X-Forwarded-For Header if present, else it will fallback to the remote address of the request.
trusted Same as forwarded but it will make sure that the ip from which the request comes is listed as a trusted proxy in the current caddy environment.
any value that is an IPv4 or IPv6 The mode field supportes the Caddy placeholders which allows you to fully customize the IP that is used for lookup.

NOTE: If the value maps to an empty string, the remote address of the client will be used as a fallback.

Placeholder Variables

Variable Example
ipinfo_free.ip 1.1.1.1
ipinfo_free.country AU
ipinfo_free.country_name Australia
ipinfo_free.continent OC
ipinfo_free.continent_name Oceania
ipinfo_free.asn AS13335
ipinfo_free.as_name Cloudflare, Inc.
ipinfo_free.as_domain cloudflare.com

Advanced Examples

Just replace the body of the server from the Caddyfile example on top.

Change Response for Countries

This is a simple example on how the response can be changed for certain countries.

ipinfo_free

header Content-Type text/plain

@dach expression ({ipinfo_free.country} in ["DE", "CH", "AT"])

respond @dach "Hallo Besucher aus der DACH-Region!"
respond "Hello visistor from {ipinfo_free.country_name}"
Simple GeoIP API

Simply query with http://localhost:8080/?ip=IP.

ipinfo_free "{http.request.uri.query.ip}"

header Content-Type text/plain
respond <<TEXT
IP: {ipinfo_free.ip}
            
Country: {ipinfo_free.country_name} ({ipinfo_free.country})
Continent: {ipinfo_free.continent_name} ({ipinfo_free.continent})
ASN: {ipinfo_free.asn} {ipinfo_free.as_name} {ipinfo_free.as_domain}
TEXT 200
More?

Do you have a neat way of using this library in your Caddyfile? Feel free to submit it.

Internals

This module will automatically update the database from ipinfo and store it in the configured path. You can freely configure the cron option to update the database in a timely manner of your choosing. However, the most frequent update rate that should be used is hourly as the database will only be updated by IPInfo every 24 hours.

Resources

Development

Clone, create example config and run with xcaddy.

git clone https://github.com/oltdaniel/caddy-ipinfo-free.git
cd caddy-ipinfo-free

CADDY_VERSION=master xcaddy run
# or
CADDY_VERSION=master xcaddy build --with github.com/oltdaniel/caddy-ipinfo-free=.
./caddy run

License

IP address data powered by IPinfo

MIT License

Documentation

Index

Constants

View Source 
const (
	DEFAULT_CRON = "10 16 * * *"

	CRON_NAME_UPDATE         = "update"
	CRON_NAME_INITIAL_UPDATE = "initial-update"

	ID_MODULE_STATE = "caddy.states.ipinfo-free"
)
View Source 
const (
	ID_MODULE_HANDLER = "http.handlers.ipinfo-free"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type IPInfoFreeChecksumResponse 

type IPInfoFreeChecksumResponse struct {
	Checksums struct {
		MD5    string `json:"md5"`
		SHA1   string `json:"sha1"`
		SHA256 string `json:"sha256"`
	} `json:"checksums"`
}

Structure to unmarshal response from https://ipinfo.io/data/free/country.mmdb/checksums?token=magicduck

type IPInfoFreeHandler 

type IPInfoFreeHandler struct {
	Mode string `json:"mode,omitempty"`
	// contains filtered or unexported fields
}

func (IPInfoFreeHandler) CaddyModule 

func (IPInfoFreeHandler) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information

func (*IPInfoFreeHandler) Provision 

func (m *IPInfoFreeHandler) Provision(ctx caddy.Context) error

func (IPInfoFreeHandler) ServeHTTP 

func (m IPInfoFreeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error

func (*IPInfoFreeHandler) UnmarshalCaddyfile 

func (m *IPInfoFreeHandler) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

func (*IPInfoFreeHandler) Validate 

func (m *IPInfoFreeHandler) Validate() error

type IPInfoFreeState 

type IPInfoFreeState struct {
	Url  string `json:"url,omitempty"`
	Cron string `json:"cron,omitempty"`
	Path string `json:"path,omitempty"`
	// contains filtered or unexported fields
}

Define our module with optional json fields that can be stored by caddy

func (IPInfoFreeState) CaddyModule 

func (IPInfoFreeState) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information

func (*IPInfoFreeState) Cleanup 

func (m *IPInfoFreeState) Cleanup() error

func (*IPInfoFreeState) Provision 

func (m *IPInfoFreeState) Provision(ctx caddy.Context) error

func (*IPInfoFreeState) Start 

func (m *IPInfoFreeState) Start() error

func (*IPInfoFreeState) Stop 

func (m *IPInfoFreeState) Stop() error

func (*IPInfoFreeState) UnmarshalCaddyfile 

func (m *IPInfoFreeState) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler

func (*IPInfoFreeState) Validate 

func (m *IPInfoFreeState) Validate() error

type IPInfoRecord 

type IPInfoRecord struct {
	Country       string `maxminddb:"country"`
	CountryName   string `maxminddb:"country_name"`
	Continent     string `maxminddb:"continent"`
	ContinentName string `maxminddb:"continent_name"`
	ASN           string `maxminddb:"asn"`
	ASName        string `maxminddb:"as_name"`
	ASDomain      string `maxminddb:"as_domain"`
}

Definee struct for ipinfo database format (not all fields filled depending on database type)

Source Files

View all Source files

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