add support for reading certificates from clipboard. (#34)

.github/workflows/pipeline.yml

@@ -6,7 +6,14 @@ permissions:
   contents: write
 
 jobs:
+  prereqs:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install libx11-dev
+        run: sudo apt-get update && sudo apt-get install -y libx11-dev
   go:
+    needs:
+      - prereqs
     uses: pete911/github-actions/.github/workflows/go.yml@main
   go-release:
     needs:

flag.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"os"
 	"strconv"
+
+	"golang.design/x/clipboard"
 )
 
 type Flags struct {
@@ -17,6 +19,7 @@ type Flags struct {
 	Pem         bool
 	PemOnly     bool
 	Version     bool
+	Clipboard   bool
 	Args        []string
 }
 
@@ -38,6 +41,10 @@ func ParseFlags() (Flags, error) {
 		"whether to print pem as well")
 	flagSet.BoolVar(&flags.PemOnly, "pem-only", getBoolEnv("CERTINFO_PEM_ONLY", false),
 		"whether to print only pem (useful for downloading certs from host)")
+	if isClipboardSupported() {
+		flagSet.BoolVar(&flags.Clipboard, "clipboard", false,
+			"read input from clipboard")
+	}
 	flagSet.BoolVar(&flags.Version, "version", getBoolEnv("CERTINFO_VERSION", false),
 		"certinfo version")
 
@@ -66,3 +73,12 @@ func getBoolEnv(envName string, defaultValue bool) bool {
 	}
 	return defaultValue
 }
+
+func isClipboardSupported() bool {
+
+	if err := clipboard.Init(); err == nil {
+		return true
+	}
+
+	return false
+}

flag_test.go

@@ -1,10 +1,11 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 	"os"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestParseFlags(t *testing.T) {
@@ -23,6 +24,7 @@ func TestParseFlags(t *testing.T) {
 		assert.False(t, flags.PemOnly)
 		assert.False(t, flags.Version)
 		assert.Empty(t, flags.Args)
+		assert.False(t, flags.Clipboard)
 	})
 
 	t.Run("given args are set and env vars empty then flags are set to provided args", func(t *testing.T) {
@@ -49,6 +51,37 @@ func TestParseFlags(t *testing.T) {
 		assert.Empty(t, flags.Args)
 	})
 
+	t.Run("given clipboard supported and args are set and env vars empty then flags are set to provided args", func(t *testing.T) {
+
+		if !isClipboardSupported() {
+			t.Skip("clipboard not supported in this environment")
+		}
+
+		setInput(t, []string{"flag",
+			"-expiry=true",
+			"-insecure=true",
+			"-chains=true",
+			"-chains=true",
+			"-pem=true",
+			"-pem-only=true",
+			"-version=true",
+			"-clipboard=true",
+		}, nil)
+
+		flags, err := ParseFlags()
+		require.NoError(t, err)
+
+		assert.True(t, flags.Expiry)
+		assert.True(t, flags.Insecure)
+		assert.True(t, flags.Chains)
+		assert.True(t, flags.Pem)
+		assert.True(t, flags.PemOnly)
+		assert.True(t, flags.Version)
+		assert.True(t, flags.Version)
+		assert.Empty(t, flags.Args)
+		assert.True(t, flags.Clipboard)
+	})
+
 	t.Run("given args are not set and env vars are set then flags are set to provided env vars", func(t *testing.T) {
 
 		setInput(t, []string{"flag"}, map[string]string{

go.mod

@@ -5,10 +5,15 @@ go 1.20
 require (
 	github.com/icza/gox v0.0.0-20230330130131-23e1aaac139e
 	github.com/stretchr/testify v1.8.4
+	golang.design/x/clipboard v0.7.0
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 // indirect
+	golang.org/x/image v0.6.0 // indirect
+	golang.org/x/mobile v0.0.0-20230301163155-e0f57694e12c // indirect
+	golang.org/x/sys v0.5.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,3 +1,4 @@
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/icza/gox v0.0.0-20230330130131-23e1aaac139e h1:aIs1rPxsH8t12+eWzEfrvK2o99fwiC0P9Qr8roW0vsU=
@@ -6,6 +7,54 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.design/x/clipboard v0.7.0 h1:4Je8M/ys9AJumVnl8m+rZnIvstSnYj1fvzqYrU3TXvo=
+golang.design/x/clipboard v0.7.0/go.mod h1:PQIvqYO9GP29yINEfsEn5zSQKAz3UgXmZKzDA6dnq2E=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 h1:estk1glOnSVeJ9tdEZZc5mAMDZk5lNJNyJ6DvrBkTEU=
+golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56/go.mod h1:JhuoJpWY28nO4Vef9tZUw9qufEGTyX1+7lmHxV5q5G4=
+golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/image v0.6.0 h1:bR8b5okrPI3g/gyZakLZHeWxAR8Dn5CyxXv1hLH5g/4=
+golang.org/x/image v0.6.0/go.mod h1:MXLdDR43H7cDJq5GEGXEVeeNhPgi+YYEQ2pC1byI1x0=
+golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
+golang.org/x/mobile v0.0.0-20230301163155-e0f57694e12c h1:Gk61ECugwEHL6IiyyNLXNzmu8XslmRP2dS0xjIYhbb4=
+golang.org/x/mobile v0.0.0-20230301163155-e0f57694e12c/go.mod h1:aAjjkJNdrh3PMckS4B10TGS2nag27cbKR1y2BpUxsiY=
+golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"fmt"
+	"github.com/pete911/certinfo/pkg/cert"
 	"os"
 	"strconv"
 	"strings"
-
-	"github.com/pete911/certinfo/pkg/cert"
 )
 
 var Version = "dev"
@@ -44,6 +43,15 @@ func main() {
 
 func LoadCertificatesLocations(flags Flags) cert.CertificateLocations {
 
+	if flags.Clipboard {
+		certificateLocation, err := cert.LoadCertificateFromClipboard()
+		if err != nil {
+			printCertFileError("clipboard", err)
+			return nil
+		}
+		return []cert.CertificateLocation{certificateLocation}
+	}
+
 	if len(flags.Args) > 0 {
 		var certificateLocations cert.CertificateLocations
 		for _, arg := range flags.Args {

pkg/cert/location.go

@@ -3,7 +3,9 @@ package cert
 import (
 	"bytes"
 	"crypto/tls"
+	"errors"
 	"fmt"
+	"golang.design/x/clipboard"
 	"io"
 	"net"
 	"os"
@@ -92,6 +94,20 @@ func LoadCertificateFromStdin() (CertificateLocation, error) {
 	return loadCertificate("stdin", content)
 }
 
+func LoadCertificateFromClipboard() (CertificateLocation, error) {
+
+	if err := clipboard.Init(); err != nil {
+		return CertificateLocation{}, fmt.Errorf("unable to load from clipboard: %w", err)
+	}
+
+	content := clipboard.Read(clipboard.FmtText)
+	if content == nil {
+		return CertificateLocation{}, errors.New("clipboard is empty")
+	}
+
+	return loadCertificate("clipboard", content)
+}
+
 func loadCertificate(fileName string, data []byte) (CertificateLocation, error) {
 
 	certificates, err := FromBytes(bytes.TrimSpace(data))

pkg/cert/location_test.go

@@ -3,9 +3,11 @@ package cert
 import (
 	"bytes"
 	"crypto/tls"
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"testing"
+	"golang.design/x/clipboard"
 )
 
 func Test_nameFormat(t *testing.T) {
@@ -39,3 +41,17 @@ func Test_loadCertificate(t *testing.T) {
 		require.NoError(t, err)
 	})
 }
+
+func Test_loadCertificateFromClipboard(t *testing.T) {
+	if err := clipboard.Init(); err != nil {
+		t.Skip("clipboard not supported in this environment")
+	}
+
+	t.Run("given valid certificate in clipboard then cert is loaded", func(t *testing.T) {
+		certificate := loadTestFile(t, "cert.pem")
+		clipboard.Write(clipboard.FmtText, certificate)
+
+		_, err := LoadCertificateFromClipboard()
+		require.NoError(t, err)
+	})
+}

vendor/golang.design/x/clipboard/.gitignore

@@ -0,0 +1,15 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/

vendor/golang.design/x/clipboard/Dockerfile

@@ -0,0 +1,13 @@
+# Copyright 2021 The golang.design Initiative Authors.
+# All rights reserved. Use of this source code is governed
+# by a MIT license that can be found in the LICENSE file.
+#
+# Written by Changkun Ou <changkun.de>
+
+FROM golang:1.17
+RUN apt-get update && apt-get install -y \
+      xvfb libx11-dev libegl1-mesa-dev libgles2-mesa-dev \
+    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+WORKDIR /app
+COPY . .
+CMD [ "sh", "-c", "./tests/test-docker.sh" ]

vendor/golang.design/x/clipboard/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Changkun Ou <contact@changkun.de>
+
+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.