shovel

Make a lot of DNS requests and count the results! Useful for testing complex dynamic DNS records.

Pass multiple qnames, nameservers, record types, and client subnets, either via command line flags, a config, or a combo of both. shovel will dig all combinations of those and show you the results.

Use

Also see examples.md

With different client subnets

./demo.gif

With different record types

This uses the same config as the above gif. No subnets passed, so that column is excluded from the output.

$ shovel dig --qname linkedin.com --rtype A --rtype AAAA
╭──────────────┬───────┬──────────────────┬─────────────────┬───────╮
│ QNAME         │ RTYPE │ NAMESERVER       │ ANS/ERR         │ COUNT │
├──────────────┼───────┼──────────────────┼─────────────────┼───────┤
│ linkedin.com │ A     │ # ns1            │ 13.107.42.14    │    10 │
│              │       │ 198.51.45.9:53   │                 │       │
│              │       ├──────────────────┼─────────────────┼───────┤
│              │       │ # dyn            │ 13.107.42.14    │    10 │
│              │       │ 108.59.161.43:53 │                 │       │
│              ├───────┼──────────────────┼─────────────────┼───────┤
│              │ AAAA  │ # ns1            │ 2620:1ec:21::14 │    10 │
│              │       │ 198.51.45.9:53   │                 │       │
│              │       ├──────────────────┼─────────────────┼───────┤
│              │       │ # dyn            │ 2620:1ec:21::14 │    10 │
│              │       │ 108.59.161.43:53 │                 │       │
╰──────────────┴───────┴──────────────────┴─────────────────┴───────╯

Install

Homebrew: brew install bbkane/tap/shovel
Scoop:

scoop bucket add bbkane https://github.com/bbkane/scoop-bucket
scoop install bbkane/shovel

Download Mac/Linux/Windows executable: GitHub releases
Go: go install go.bbkane.com/shovel@latest
Build with goreleaser after cloning: goreleaser --snapshot --skip-publish --clean

Notes

See Go Developer Tooling for notes on development tooling.

Run the webapp locally with OpenObserve

Export env vars:

export SHOVEL_SERVE_OPENOBSERVE_PASS='...';
export SHOVEL_SERVE_OPENOBSERVE_USER='...';
export ZO_ROOT_USER_EMAIL='...';
export ZO_ROOT_USER_PASSWORD='...';

Run OpenObserve (in another terminal) after downloading:

./openobserve

Open OpenObserve at: http://localhost:5080/web/traces?period=15m&query=&org_identifier=default

Run shovel. Check go run . serve --help to see all flags available. Also see [format_jsonl.py]https://github.com/bbkane/dotfiles/blob/master/bin_common/bin_common/format_jsonl.py)

go run . serve | format_jsonl.py fmt

Open shovel at: http://127.0.0.1:8080/?count=1&nameservers=dns3.p09.nsone.net%3A53&protocol=udp&qnames=linkedin.com+www.linkedin.com&rtypes=A&subnetMap=&subnets=

Install shovel + OpenObserve as systemd services, on a local dev VM or production VM with shovel_ansible

Dev Notes

Go doc: https://pkg.go.dev/github.com/miekg/dns
miekg/dns exmple: https://github.com/miekg/exdns/blob/master/q/q.go
Look up IP subnets for a country: http://www.nirsoft.net/countryip/ or https://ipinfo.io/countries

bbkane / shovel

readme