init 1

.github/FUNDING.yml

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+custom: ["https://paypal.me/dw1s", "https://saweria.co/dwisiswant0"]

.github/workflows/build.yaml

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+name: Build
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:          
+  build:
+    name: Dependencies
+    runs-on: ubuntu-latest 
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Build
+        run: go build .
+        working-directory: ./

.github/workflows/release.yaml

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+name: Release
+on:
+  create:
+    tags:
+      - v*
+
+jobs: 
+  release: 
+    runs-on: ubuntu-latest
+    steps: 
+      - name: "Check out code"
+        uses: actions/checkout@v2
+        with: 
+          fetch-depth: 0
+
+      - name: "Set up Go"
+        uses: actions/setup-go@v2
+        with: 
+          go-version: 1.17
+
+      - name: "Create release on GitHub"
+        uses: goreleaser/goreleaser-action@v2
+        with: 
+          args: "release --rm-dist"
+          version: latest
+        env: 
+          GITHUB_TOKEN: "${{ secrets.RELEASE_TOKEN }}"

.github/workflows/update.yaml

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+name: Update DB
+on:
+  schedule:
+    - cron: "0 0 * * 0" # at 00:00 on Sunday
+  workflow_dispatch:
+
+jobs: 
+  update: 
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Install dependencies"
+        run: sudo apt install curl -y
+
+      - name: "Check for updates"
+        run: |
+          if [[ "$(curl -skL ${{ secrets.LOCAL_DB }} | wc -l)" == "$(curl -skL ${{ secrets.REMOTE_DB }} | wc -l)" ]]; then
+            echo "::set-output name=isUpdated::true"
+          else
+            echo "::set-output name=isUpdated::false"
+          fi
+
+          echo "::set-output name=date::$(date)"
+
+      - name: "Check out code"
+        if: steps.check.isUpdated == 'false'
+        uses: actions/checkout@v2
+        with: 
+          fetch-depth: 0
+
+      - name: "Update DB..."
+        run: curl -kLo db/tlds.txt ${{ secrets.REMOTE_DB }}
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        with:
+          body: "Automated update TLDs data."
+          branch-suffix: "short-commit-hash"
+          branch: "update/db"
+          commit-message: "db: Update DB ${{ steps.check.date }}"
+          committer: "Dwi Siswanto <me@dw1.io>"
+          delete-branch: true
+          reviewers: "dwisiswant0"
+          title: "db: Update DB ${{ steps.check.date }}"

.gitignore

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+tlder

.goreleaser.yml

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+builds:
+    - binary: tlder
+      main: .
+      goos:
+        - linux
+        - windows
+        - darwin
+      goarch:
+        - amd64
+        - 386
+        - arm
+        - arm64
+
+archives:
+    - id: tgz
+      format: tar.gz
+      replacements:
+          darwin: macOS
+      format_overrides:
+          - goos: windows
+            format: zip

LICENSE

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+MIT License
+
+Copyright (c) 2022 Dwi Siswanto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# TLD:er
+
+TLDs finder — check domain name availability across all valid top-level domains.
+
+## Installation
+
+- Get pre-built binary from [releases page](https://github.com/dwisiswant0/tlder/releases), or
+- If you have [Go1.17+](https://go.dev/dl/) compiler installed & configured: `go install github.com/dwisiswant0/tlder@latest`.
+
+## Usage
+
+```console
+> tlder -h
+   ________  ___         
+  /_  __/ / / _ \___ ____
+   / / / /_/ // / -_) __/
+  /_/ /___/____/\__/_/   
+  ---
+  @dwisiswant0
+
+
+Usage:
+  tlder -d NAME
+
+Options:
+  -d, --domain <NAME>   Domain NAME to permutate
+  -s, --silent          Silent mode
+      --unreg           Show unregistered TLDs only
+```
+
+## Data
+
+TLDs data taken from [data.iana.org](https://data.iana.org/TLD/). Checks for data updates are carried out weekly by [GitHub workflow](https://github.com/dwisiswant0/tlder/actions/workflows/update.yaml).
+
+## Library
+
+You can use **TLDer** as library. For example:
+
+```go
+package main
+
+import "github.com/dwisiswant0/tlder"
+
+func main() {
+	name := "dw1"
+	ext := "io"
+
+	avail, err := tlder.IsAvailable(name, ext)
+	if err != nil {
+		panic(err)
+	}
+
+	print(avail)
+}
+```
+
+## License
+
+**tlder** is distributed under MIT, contributions are welcome! See `LICENSE`.

availability.go

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+package main
+
+import (
+	"strings"
+
+	"github.com/dwisiswant0/tlder/fingerprint"
+)
+
+// IsAvailable domain check from whois response with predefined fingerprint
+func IsAvailable(domain string, extension string) (bool, error) {
+	var s bool
+
+	resp, err := whoIs(domain, extension)
+	if err != nil {
+		return s, err
+	}
+
+	if len([]byte(resp)) == 0 {
+		return s, errNoResponses
+	}
+
+	if strings.Contains(resp, "RATE LIMIT EXCEEDED") {
+		return s, errRateLimited
+	}
+
+	a := sliceContains(strings.ToLower(resp), fingerprint.Available)
+	u := sliceContains(resp, fingerprint.Unregistered)
+	// r := sliceContains(resp, fingerprint.Registered)
+
+	if a || u {
+		return !s, nil
+	}
+
+	return s, nil
+}

consts.go

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+package main
+
+const (
+  banner = `
+   ________  ___         
+  /_  __/ / / _ \___ ____
+   / / / /_/ // / -_) __/
+  /_/ /___/____/\__/_/   `
+  author = "@dwisiswant0"
+  usage  = `
+Usage:
+  tlder -d NAME
+
+Options:
+  -d, --domain <NAME>   Domain NAME to permutate
+  -s, --silent          Silent mode
+      --unreg           Show unregistered TLDs only`
+)

db/db.go

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+package db
+
+import "strings"
+
+func init() {
+	List = strings.Split(tlds, "\n")
+	List = List[1 : len(List)-1]
+}