Manually select auto-generated GPG key due to inconsistent GPG output, use tempfile for gpg-gen

src/cli/init.go

@@ -9,13 +9,14 @@ func TempInitCli() {
 	// gpgID
 	var gpgID string
 	if inputBinary("Auto-generate GPG key?") {
-		gpgID = offline.GpgKeyGen()
-	} else {
-		uidSlice := offline.GpgUIDListGen()
-		gpgIDInt := inputMenuGen("Select GPG key:", uidSlice)
-		gpgID = uidSlice[gpgIDInt-1]
+		offline.GpgKeyGen()
 	}
 
+	// select GPG key
+	uidSlice := offline.GpgUIDListGen()
+	gpgIDInt := inputMenuGen("Select GPG key:", uidSlice)
+	gpgID = uidSlice[gpgIDInt-1]
+
 	// textEditor
 	textEditor := input("Text editor (leave blank for $EDITOR, falls back to \"" + offline.FallbackEditor + "\"):")
 

src/offline/init.go

@@ -14,13 +14,8 @@ func TempInit(configFileMap map[string]string) {
 	// remove existing config file
 	removeFile(ConfigPath)
 
-	// ensure textEditor is set
 	if configFileMap["textEditor"] == "" {
-		textEditor, editorEnvPresent := os.LookupEnv("EDITOR")
-		if !editorEnvPresent {
-			textEditor = FallbackEditor
-		}
-		configFileMap["textEditor"] = textEditor
+		configFileMap["textEditor"] = textEditorFallback()
 	}
 
 	// create and write config file
@@ -49,24 +44,18 @@ func GpgUIDListGen() []string {
 	return uidSlice
 }
 
-// GpgKeyGen generates a new GPG key and returns the key ID as a string
-func GpgKeyGen() string {
+// GpgKeyGen generates a new GPG key - it does not return it due to GPG's unreliable output
+func GpgKeyGen() {
+	gpgGenTempFile := CreateTempFile()
+	defer os.Remove(gpgGenTempFile.Name())
+
 	// create and write gpg-gen file
-	createFile(ConfigDir+"/gpg-gen", []string{"Key-Type: eddsa", "Key-Curve: ed25519", "Key-Usage: sign", "Subkey-Type: ecdh", "Subkey-Curve: cv25519", "Subkey-Usage: encrypt", "Name-Real: libmutton", "Name-Comment: gpg-libmutton", "Name-Email: github.com/rwinkhart/libmutton", "Expire-Date: 0"})
-	cmd := exec.Command("gpg", "-q", "--batch", "--generate-key", ConfigDir+"/gpg-gen")
+	gpgGenTempFile.WriteString(strings.Join([]string{"Key-Type: eddsa", "Key-Curve: ed25519", "Key-Usage: sign", "Subkey-Type: ecdh", "Subkey-Curve: cv25519", "Subkey-Usage: encrypt", "Name-Real: libmutton", "Name-Comment: gpg-libmutton", "Name-Email: github.com/rwinkhart/libmutton", "Expire-Date: 0"}, "\n"))
+
+	// generate GPG key based on gpg-gen file
+	cmd := exec.Command("gpg", "-q", "--batch", "--generate-key", gpgGenTempFile.Name())
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	cmd.Stdin = os.Stdin
 	cmd.Run()
-
-	// generate GPG key based on gog-gen file
-	cmd = exec.Command("gpg", "-k", "--with-colons")
-	gpgOutputBytes, _ := cmd.Output()
-	gpgOutputLines := strings.Split(string(gpgOutputBytes), "\n")
-	uid := strings.Split(gpgOutputLines[len(gpgOutputLines)-4], ":")[9]
-
-	// remove gpg-gen file
-	removeFile(ConfigDir + "/gpg-gen")
-
-	return uid
 }

src/offline/initUNIX.go

@@ -25,3 +25,13 @@ func dirInit() {
 		os.Exit(1)
 	}
 }
+
+// textEditorFallback returns the value of the $EDITOR environment variable, or FallbackEditor if it is not set
+func textEditorFallback() string {
+	// ensure textEditor is set
+	textEditor := os.Getenv("EDITOR")
+	if textEditor == "" {
+		textEditor = FallbackEditor
+	}
+	return textEditor
+}

src/offline/initWIN.go

@@ -18,3 +18,8 @@ func dirInit() {
 		os.Exit(1)
 	}
 }
+
+// textEditorFallback returns FallbackEditor
+func textEditorFallback() string {
+	return FallbackEditor
+}

src/offline/utilitiesMisc.go

@@ -68,6 +68,18 @@ func CreateTempFile() *os.File {
 	return tempFile
 }
 
+// removeFile removes a file at targetLocation and does not error if the file does not exist
+func removeFile(targetLocation string) {
+	// remove existing config file
+	err := os.Remove(targetLocation)
+	if err != nil {
+		// ignore error if file does not exist
+		if !os.IsNotExist(err) {
+			fmt.Println(AnsiError + "Failed to remove \"" + targetLocation + "\":" + err.Error() + AnsiReset)
+		}
+	}
+}
+
 // RemoveTrailingEmptyStrings removes empty strings from the end of a slice
 func RemoveTrailingEmptyStrings(slice []string) []string {
 	for i := len(slice) - 1; i >= 0; i-- {
@@ -135,27 +147,3 @@ func EntryIsNotEmpty(entryData []string) bool {
 	}
 	return false
 }
-
-// removeFile removes a file at targetLocation and does not error if the file does not exist
-func removeFile(targetLocation string) {
-	// remove existing config file
-	err := os.Remove(targetLocation)
-	if err != nil {
-		// ignore error if file does not exist
-		if !os.IsNotExist(err) {
-			fmt.Println(AnsiError + "Failed to remove \"" + targetLocation + "\":" + err.Error() + AnsiReset)
-		}
-	}
-}
-
-// createFile creates and writes a file at targetLocation with fileData - it removes the file if it already exists
-func createFile(targetLocation string, fileData []string) {
-	removeFile(targetLocation)
-	file, err := os.OpenFile(targetLocation, os.O_CREATE|os.O_WRONLY, 0600)
-	if err != nil {
-		fmt.Println(AnsiError + "Failed to create \"" + targetLocation + "\":" + err.Error() + AnsiReset)
-		os.Exit(1)
-	}
-	defer file.Close()
-	file.WriteString(strings.Join(fileData, "\n"))
-}