update

.gitattributes

@@ -0,0 +1,93 @@
+# https://github.com/gitattributes/gitattributes/blob/master/Common.gitattributes
+
+# Common settings that generally should always be used with your language specific settings
+
+# Auto detect text files and perform LF normalization
+*          text=auto
+
+#
+# The above will handle all files NOT found below
+#
+
+# Documents
+*.bibtex   text diff=bibtex
+*.doc      diff=astextplain
+*.DOC      diff=astextplain
+*.docx     diff=astextplain
+*.DOCX     diff=astextplain
+*.dot      diff=astextplain
+*.DOT      diff=astextplain
+*.pdf      diff=astextplain
+*.PDF      diff=astextplain
+*.rtf      diff=astextplain
+*.RTF      diff=astextplain
+*.md       text diff=markdown
+*.mdx      text diff=markdown
+*.tex      text diff=tex
+*.adoc     text
+*.textile  text
+*.mustache text
+*.csv      text eol=crlf
+*.tab      text
+*.tsv      text
+*.txt      text
+*.sql      text
+*.epub     diff=astextplain
+
+# Graphics
+*.png      binary
+*.jpg      binary
+*.jpeg     binary
+*.gif      binary
+*.tif      binary
+*.tiff     binary
+*.ico      binary
+# SVG treated as text by default.
+*.svg      text
+# If you want to treat it as binary,
+# use the following line instead.
+# *.svg    binary
+*.eps      binary
+
+# Scripts
+*.bash     text eol=lf
+*.fish     text eol=lf
+*.sh       text eol=lf
+*.zsh      text eol=lf
+# These are explicitly windows files and should use crlf
+*.bat      text eol=crlf
+*.cmd      text eol=crlf
+*.ps1      text eol=crlf
+
+# Serialisation
+*.json     text
+*.toml     text
+*.xml      text
+*.yaml     text
+*.yml      text
+
+# Archives
+*.7z       binary
+*.gz       binary
+*.tar      binary
+*.tgz      binary
+*.zip      binary
+
+# Text files where line endings should be preserved
+*.patch    -text
+
+#
+# Exclude files from exporting
+#
+
+.gitattributes export-ignore
+.gitignore     export-ignore
+.gitkeep       export-ignore
+
+# https://github.com/gitattributes/gitattributes/blob/master/Go.gitattributes
+
+# Treat all Go files in this repo as binary, with no git magic updating
+# line endings. Windows users contributing to Go will need to use a
+# modern version of git and editors capable of LF line endings.
+
+*.go -text diff=golang

.github/workflows/go.yml

@@ -13,20 +13,22 @@ jobs:
         with:
           go-version: ${{ matrix.go }}
 
+      - name: Install Task
+        uses: arduino/setup-task@v2
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Check out code
         uses: actions/checkout@v4
 
-      - name: build cache
-        uses: actions/cache@v4
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
       - name: Get dependencies
-        run: |
-          go get -v -t -d ./...
+        run: task deps
+
+      - name: Install dependencies
+        run: task setup
 
       - name: Build
-        run: make build
+        run: task build
+
+      - name: Test
+        run: task test

.github/workflows/golangci-lint.yml

@@ -15,3 +15,4 @@ jobs:
         uses: golangci/golangci-lint-action@v6
         with:
           version: latest
+          args: --timeout=5m

.github/workflows/update.yml

@@ -19,18 +19,25 @@ jobs:
         with:
           go-version: "stable"
 
+      - name: Install Task
+        uses: arduino/setup-task@v2
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: setup
+        run: task setup
+
       - name: update
-        run: |
-          make update
+        run: task update
 
       - name: setup git config
         run: |
           git config user.name "Github"
           git config user.email "<>"
 
       - name: commit changes
-        # need to override the default shell so we can check
-        # for error codes. Otherwise it will always fail if
+        # need to override the default shell, so we can check
+        # for error codes. Otherwise, it will always fail if
         # one command returns an error code other than 0
         shell: bash --noprofile --norc -o pipefail {0}
         run: |

.golangci.yml

@@ -1,3 +1,4 @@
 linters:
   enable:
     - nonamedreturns
+    - revive

.goreleaser.yaml

@@ -1,11 +1,20 @@
 # This is an example .goreleaser.yml file with some sensible defaults.
 # Make sure to check the documentation at https://goreleaser.com
+
+# The lines below are called `modelines`. See `:help modeline`
+# Feel free to remove those if you don't want/need to use them.
+# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+
+version: 2
+
 before:
   hooks:
     # You may remove this if you don't use go modules.
     - go mod tidy
     # you may remove this if you don't need go generate
     - go generate ./...
+
 builds:
   - env:
       - CGO_ENABLED=0
@@ -16,7 +25,7 @@ builds:
 
 archives:
   - format: tar.gz
-    # this name template makes the OS and Arch compatible with the results of uname.
+    # this name template makes the OS and Arch compatible with the results of `uname`.
     name_template: >-
       {{ .ProjectName }}_
       {{- title .Os }}_
@@ -26,20 +35,12 @@ archives:
       {{- if .Arm }}v{{ .Arm }}{{ end }}
     # use zip for windows archives
     format_overrides:
-    - goos: windows
-      format: zip
-checksum:
-  name_template: 'checksums.txt'
-snapshot:
-  name_template: "{{ incpatch .Version }}-next"
+      - goos: windows
+        format: zip
+
 changelog:
   sort: asc
   filters:
     exclude:
-      - '^docs:'
-      - '^test:'
-
-# The lines beneath this are called `modelines`. See `:help modeline`
-# Feel free to remove those if you don't want/use them.
-# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
-# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+      - "^docs:"
+      - "^test:"

Taskfile.yml

@@ -0,0 +1,54 @@
+version: "3"
+
+vars:
+  PROGRAM: cisco-snmp-pwner
+
+tasks:
+  deps:
+    cmds:
+      - go mod tidy -v
+
+  update:
+    cmds:
+      - go get -u
+      - go mod tidy -v
+
+  setup:
+    cmds:
+      - go install mvdan.cc/gofumpt@latest
+
+  build:
+    aliases: [default]
+    deps: [deps]
+    env:
+      CGO_ENABLED: 0
+    cmds:
+      - go fmt ./...
+      - gofumpt -l -w .
+      - go vet ./...
+      - go build -o {{.PROGRAM}}
+
+  test:
+    deps: [deps]
+    env:
+      CGO_ENABLED: 1 # required by -race
+    cmds:
+      - go test -race -cover ./...
+
+  run:
+    deps: [build]
+    cmds:
+      - ./{{.PROGRAM}}
+
+  lint:
+    cmds:
+      - golangci-lint run ./... --timeout=30m
+      - go mod tidy
+
+  lint-update:
+    cmds:
+      - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b {{ .GOPATH }}/bin
+      - golangci-lint --version
+    vars:
+      GOPATH:
+        sh: go env GOPATH

helper.go

@@ -7,7 +7,7 @@ import (
 )
 
 func randomString(n int) string {
-	var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	letters := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
 	b := make([]rune, n)
 	for i := range b {
 		b[i] = letters[rand.Intn(len(letters))]

main.go

@@ -3,7 +3,6 @@ package main
 import (
 	"bufio"
 	"fmt"
-	"math/rand"
 	"os"
 	"time"
 
@@ -13,13 +12,7 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
-var (
-	log *logrus.Logger
-)
-
-func init() {
-	rand.Seed(time.Now().UnixNano())
-}
+var log *logrus.Logger
 
 type options struct {
 	debug           bool

tftp.go

@@ -35,7 +35,7 @@ func (t tftpStuff) writeHandler(filenameRaw string, wt io.WriterTo) error {
 	}
 	filename = fmt.Sprintf("%s_%s", filename, randomString(5))
 
-	file, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644)
+	file, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0o644)
 	if err != nil {
 		log.Errorf("%v", err)
 		return err