doggo

🐶 Command-line DNS client for humans
doggo.mrkaran.dev

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doggo is a modern command-line DNS client (like dig) written in Golang. It outputs information in a neat concise manner and supports protocols like DoH, DoT and DNSCrypt as well.

It's totally inspired from dog which is written in Rust. I wanted to add some features to it but since I don't know Rust, I found it as a nice opportunity to experiment with writing a DNS Client from scratch in Go myself. Hence the name dog +go => doggo.

Features

• Human readable output - supports colors and tabular format.
• Supports JSON format - can be useful while writing scripts.
• Has support for multiple transport protocols:
  • DNS over HTTPS (DoH)
  • DNS over TLS (DoT)
  • DNS over TCP
  • DNS over UDP
• Supports ndots and search configurations from resolv.conf or command-line arguments.
• Supports multiple resolvers at once.
• Supports IPv4 and IPv6 both.
• Available as a web tool as well: https://doggo.mrkaran.dev.
• Shell completions for zsh and fish.

Installation

Binary

You can grab the latest binaries for Linux, MacOS and Windows from the Releases section.

For eg, to pull the latest linux-amd64 binary:

$ cd "$(mktemp -d)"
$ curl -sL "https://github.com/mr-karan/doggo/releases/download/v0.3.7/doggo_0.3.7_linux_amd64.tar.gz" | tar xz
$ mv doggo /usr/local/bin
# doggo should be available now in your $PATH
$ doggo

Docker

Images are hosted on Github Container Registry (ghcr.io). You can view all the tags here. It even supports ARM so you can spin up a container on your RPi to do DNS lookups, cause why not.

Pull

docker pull ghcr.io/mr-karan/doggo:latest

Running

You can supply all arguments to the CLI directly to docker run command. Eg:

docker run ghcr.io/mr-karan/doggo:latest mrkaran.dev @1.1.1.1 MX

Using snap

$ sudo snap install doggo

NOTE: Since the confinement mode is strict as of now, it cannot access your host's /etc/resolv.conf. I'll be making a request in the Snap forums soon so that it can be manually reviewed and allowed to use --classic. Until then, please specify a nameserver manually if using snap.

From Source

You need to have go installed in your system.

$ go get github.com/mr-karan/doggo/cmd/doggo
$ mv $GOPATH/bin/cli $GOPATH/bin/doggo 

The binary will be available at $GOPATH/bin/doggo.

Usage Examples

Do a simple DNS Lookup for mrkaran.dev

$ doggo mrkaran.dev                                                                         
NAME            TYPE    CLASS   TTL     ADDRESS         NAMESERVER   
mrkaran.dev.    A       IN      20s     13.250.205.9    127.0.0.1:53
mrkaran.dev.    A       IN      20s     206.189.89.118  127.0.0.1:53

Query MX records for github.com using 9.9.9.9 resolver

doggo MX github.com @9.9.9.9
NAME            TYPE    CLASS   TTL     ADDRESS                         NAMESERVER 
github.com.     MX      IN      3600s   10 alt3.aspmx.l.google.com.     9.9.9.9:53
github.com.     MX      IN      3600s   5 alt1.aspmx.l.google.com.      9.9.9.9:53
github.com.     MX      IN      3600s   10 alt4.aspmx.l.google.com.     9.9.9.9:53
github.com.     MX      IN      3600s   5 alt2.aspmx.l.google.com.      9.9.9.9:53
github.com.     MX      IN      3600s   1 aspmx.l.google.com.           9.9.9.9:53

or using named parameters:

$ doggo -t MX -n 9.9.9.9 github.com
NAME            TYPE    CLASS   TTL     ADDRESS                         NAMESERVER 
github.com.     MX      IN      3600s   10 alt3.aspmx.l.google.com.     9.9.9.9:53
github.com.     MX      IN      3600s   5 alt1.aspmx.l.google.com.      9.9.9.9:53
github.com.     MX      IN      3600s   10 alt4.aspmx.l.google.com.     9.9.9.9:53
github.com.     MX      IN      3600s   5 alt2.aspmx.l.google.com.      9.9.9.9:53
github.com.     MX      IN      3600s   1 aspmx.l.google.com.           9.9.9.9:53

Query DNS records for archive.org using Cloudflare DoH resolver

$ doggo archive.org @https://cloudflare-dns.com/dns-query 
NAME            TYPE    CLASS   TTL     ADDRESS         NAMESERVER                           
archive.org.    A       IN      41s     207.241.224.2   https://cloudflare-dns.com/dns-query

Query DNS records for internetfreedom.in with JSON output

$ doggo internetfreedom.in --json | jq
{
  "responses": {
    "answers": [
      {
        "name": "internetfreedom.in.",
        "type": "A",
        "class": "IN",
        "ttl": "22s",
        "address": "104.27.158.96",
        "rtt": "37ms",
        "nameserver": "127.0.0.1:53"
      },
      {
        "name": "internetfreedom.in.",
        "type": "A",
        "class": "IN",
        "ttl": "22s",
        "address": "104.27.159.96",
        "rtt": "37ms",
        "nameserver": "127.0.0.1:53"
      },
      {
        "name": "internetfreedom.in.",
        "type": "A",
        "class": "IN",
        "ttl": "22s",
        "address": "172.67.202.77",
        "rtt": "37ms",
        "nameserver": "127.0.0.1:53"
      }
    ],
    "queries": [
      {
        "name": "internetfreedom.in.",
        "type": "A",
        "class": "IN"
      }
    ]
  }
}

Query DNS records for duckduckgo.com and show RTT (Round Trip Time)

$ doggo duckduckgo.com --time                
NAME            TYPE    CLASS   TTL     ADDRESS         NAMESERVER      TIME TAKEN 
duckduckgo.com. A       IN      30s     40.81.94.43     127.0.0.1:53    45ms      

Command-line Arguments

Transport Options

URL scheme of the server is used to identify which resolver to use for lookups. If no scheme is specified, defaults to udp.

  @udp://        eg: @1.1.1.1 initiates a UDP resolver for 1.1.1.1:53.
  @tcp://        eg: @1.1.1.1 initiates a TCP resolver for 1.1.1.1:53.
  @https://      eg: @https://cloudflare-dns.com/dns-query initiates a DOH resolver for Cloudflare DoH server.
  @tls://        eg: @1.1.1.1 initiates a DoT resolver for 1.1.1.1:853.
  @sdns://       eg: @sdns://AgcAAAAAAAAABzEuMC4wLjEAEmRucy5jbG91ZGZsYXJlLmNvbQovZG5zLXF1ZXJ5
                 initiates a DNSCrypt or DoH resolver using its DNS stamp

Query Options

  -q, --query=HOSTNAME        Hostname to query the DNS records for (eg mrkaran.dev).
  -t, --type=TYPE             Type of the DNS Record (A, MX, NS etc).
  -n, --nameserver=ADDR       Address of a specific nameserver to send queries to (9.9.9.9, 8.8.8.8 etc).
  -c, --class=CLASS           Network class of the DNS record (IN, CH, HS etc).

Resolver Options

  --ndots=INT        Specify ndots parameter. Takes value from /etc/resolv.conf if using the system nameserver or 1 otherwise.
  --search           Use the search list defined in resolv.conf. Defaults to true. Set --search=false to disable search list.
  --timeout          Specify timeout (in seconds) for the resolver to return a response.
  -4 --ipv4          Use IPv4 only.
  -6 --ipv6          Use IPv6 only.

Output Options

  -J, --json                  Format the output as JSON.
  --color                     Defaults to true. Set --color=false to disable colored output.
  --debug                     Enable debug logging.
  --time                      Shows how long the response took from the server.

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Contributing

I'm open to accept feature requests and/or issues. I understand doggo is a new DNS Client in the town and there might be some edge cases I am not handling. Please feel free to open issues if you ever come across such a case. For now I am focussing more on planned features for a stable v1.0 release soon.

License

LICENSE