feat: Add support for downloading yarn with gpg signature check

BREAKING CHANGE: The download command was renamed to nodejs

README.md

@@ -35,22 +35,32 @@ runtime, interpreter or package manager should make the setup easier in the end.
 
 ## Usage
 
+### Node.js
+
 #### With specific version
 
 ```bash
-nsd download /path/ --version 12.15.0
+nsd nodejs /path/ --version 12.15.0
 ```
 
 #### With specific version from file
 
 ```bash
-nsd download /path/ --from-file ./node_version
+nsd nodejs /path/ --from-file ./node_version
 ```
 
 #### No specific version, will try reading from CWD/.nvmrc
 
 ```bash
-nsd download /path/
+nsd nodejs /path/
+```
+
+### Yarn (Currently only v1 supported)
+
+#### With specific version
+
+```bash
+nsd yarn /path/ --version 1.22.5
 ```
 
 ## How to build

go.mod

@@ -7,4 +7,5 @@ require (
 	github.com/gorilla/mux v1.8.0
 	github.com/mholt/archiver/v3 v3.5.0
 	github.com/spf13/cobra v1.1.1
+	golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5
 )

go.sum

@@ -200,6 +200,7 @@ golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnf
 golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 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 v0.0.0-20190605123033-f99c8df09eb5 h1:58fnuSXlxZmFdJyvtTFVmVhcMLU6v5fEb/ok4wyqtNU=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=

nsd/checksum/gpg.go

@@ -0,0 +1,42 @@
+package checksum
+
+import (
+	"fmt"
+	"golang.org/x/crypto/openpgp"
+	"os"
+)
+
+// VerifyGPG is cool
+func VerifyGPG(signatureFilePath string, keyFilePath string, tarFilePath string) (err error) {
+	keyFile, err := os.Open(keyFilePath)
+	if err != nil {
+		return
+	}
+	defer keyFile.Close()
+
+	signatureFile, err := os.Open(signatureFilePath)
+	if err != nil {
+		return
+	}
+	defer signatureFile.Close()
+
+	tarFile, err := os.Open(tarFilePath)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	defer tarFile.Close()
+
+	keyring, err := openpgp.ReadArmoredKeyRing(keyFile)
+	if err != nil {
+		return
+	}
+	entity, err := openpgp.CheckArmoredDetachedSignature(keyring, tarFile, signatureFile)
+	if err != nil {
+		return
+	}
+
+	fmt.Println(entity)
+
+	return
+}

nsd/checksum/gpg_test.go

@@ -0,0 +1,10 @@
+package checksum
+
+import "testing"
+
+func TestVerifyGPGSignature(t *testing.T) {
+	err := VerifyGPG("./testdata/gpg/file.txt.asc", "./testdata/gpg/pubkey.gpg", "./testdata/gpg/file.txt")
+	if err != nil {
+		t.Errorf("TestVerifyGPGSignature() did error %s", err)
+	}
+}

nsd/checksum/testdata/gpg/file.txt

@@ -0,0 +1 @@
+bla

nsd/checksum/testdata/gpg/file.txt.asc

@@ -0,0 +1,14 @@
+-----BEGIN PGP SIGNATURE-----
+
+iQGzBAABCgAdFiEEdv45keW9UbLASyCZEtrqfmodL+oFAl+8PcUACgkQEtrqfmod
+L+rOUwv/d6LzM71SWxgZgtVyi3udfmtb0EkK92NzSzMxzVDRjGX6qQ8w+9x2YvAN
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+tnGbinuxZxKHs18fOV5rXVAZTgzpquj37QugsSHPtMn9p1W22O60T4RmT+D6Qu65
+a9u8YDdZ
+=3Tcr
+-----END PGP SIGNATURE-----

nsd/checksum/testdata/gpg/prvkey.gpg

@@ -0,0 +1,83 @@
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+
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+=aPpU
+-----END PGP PRIVATE KEY BLOCK-----

nsd/checksum/testdata/gpg/pubkey.gpg

@@ -0,0 +1,41 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQGNBF+8O+cBDADcl0Osc/IKOUDhPrUTPBjvWbpvbyzvyP+77sAmlTyZmHq3ZTK6
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+=/K5H
+-----END PGP PUBLIC KEY BLOCK-----

nsd/cmd/download.go → nsd/cmd/nodejs.go

@@ -18,11 +18,11 @@ import (
 )
 
 var (
-	version         string
-	fromFile        string
-	downloadCommand = &cobra.Command{
-		Use:   "download [path]",
-		Short: "Download nodejs to specific folder",
+	nodejsVersion         string
+	nodejsVersionfromFile string
+	nodejsCommand         = &cobra.Command{
+		Use:   "nodejs [path]",
+		Short: "Download Node.js to specific folder",
 		Long:  "",
 		Args: func(cmd *cobra.Command, args []string) error {
 			if len(args) < 1 {
@@ -33,19 +33,19 @@ var (
 		RunE: func(cmd *cobra.Command, args []string) (err error) {
 			downloadPath := args[0]
 
-			err = prepareFlags()
+			err = prepareNodejsFlags()
 			if err != nil {
 				return
 			}
 
-			nodeURL := fmt.Sprintf(string(NodeJs.CurrentURL)+"node-v%s-%s.%s", version, version, NodeJs.CurrentArch, NodeJs.CurrentExtension)
+			nodeURL := fmt.Sprintf(string(NodeJs.CurrentURL)+"node-v%s-%s.%s", nodejsVersion, nodejsVersion, NodeJs.CurrentArch, NodeJs.CurrentExtension)
 			nodeFilePath, err := Download.File(nodeURL)
 			if err != nil {
 				return
 			}
 			defer os.Remove(nodeFilePath)
 
-			checksumURL := fmt.Sprintf(string(NodeJs.CurrentURL)+"SHASUMS256.txt", version)
+			checksumURL := fmt.Sprintf(string(NodeJs.CurrentURL)+"SHASUMS256.txt", nodejsVersion)
 			checkusmFilePath, err := Download.File(checksumURL)
 			if err != nil {
 				return
@@ -96,39 +96,39 @@ var (
 	}
 )
 
-func prepareFlags() (err error) {
-	if version != "" && fromFile != "" {
+func prepareNodejsFlags() (err error) {
+	if nodejsVersion != "" && nodejsVersionfromFile != "" {
 		return errors.New("cannot figure out which version to install. Please only specify one of --version or --from-file")
 	}
 	versionSpecified := true
-	if version == "" && fromFile == "" {
+	if nodejsVersion == "" && nodejsVersionfromFile == "" {
 		versionSpecified = false
-		fromFile = ".nvmrc"
+		nodejsVersionfromFile = ".nvmrc"
 	}
 
-	if fromFile != "" {
-		fromFile, err = filepath.Abs(fromFile)
+	if nodejsVersionfromFile != "" {
+		nodejsVersionfromFile, err = filepath.Abs(nodejsVersionfromFile)
 		if err != nil {
 			return
 		}
 
-		content, err := ioutil.ReadFile(fromFile)
+		content, err := ioutil.ReadFile(nodejsVersionfromFile)
 		if err != nil {
 			if !versionSpecified {
 				return errors.New("No version specified and could not find any version file in the current directory")
 			}
 			return err
 		}
 
-		version = strings.Trim(string(content), " \n\r")
+		nodejsVersion = strings.Trim(string(content), " \n\r")
 	}
 
 	return
 }
 
 func init() {
-	downloadCommand.Flags().StringVarP(&version, "version", "v", "", "Which version to install")
-	downloadCommand.Flags().StringVarP(&fromFile, "from-file", "r", "", "Reads the version to be installed from a file. Either specify the filename or if empty it will try to read from .nvmrc file.")
-	downloadCommand.MarkFlagFilename("from-file")
-	rootCmd.AddCommand(downloadCommand)
+	nodejsCommand.Flags().StringVarP(&nodejsVersion, "version", "v", "", "Which version to install")
+	nodejsCommand.Flags().StringVarP(&nodejsVersionfromFile, "from-file", "r", "", "Reads the version to be installed from a file. Either specify the filename or if empty it will try to read from .nvmrc file.")
+	nodejsCommand.MarkFlagFilename("from-file")
+	rootCmd.AddCommand(nodejsCommand)
 }