Move packages out of src/

backend/init.go

@@ -0,0 +1,82 @@
+package backend
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// GpgUIDListGen generates a list of all GPG key IDs on the system and returns them as a slice of strings
+func GpgUIDListGen() []string {
+	cmd := exec.Command("gpg", "-k", "--with-colons")
+	gpgOutputBytes, _ := cmd.Output()
+	gpgOutputLines := strings.Split(string(gpgOutputBytes), "\n")
+	var uidSlice []string
+	for _, line := range gpgOutputLines {
+		if strings.HasPrefix(line, "uid") {
+			uid := strings.Split(line, ":")[9]
+			uidSlice = append(uidSlice, uid)
+		}
+	}
+	return uidSlice
+}
+
+// GpgKeyGen generates a new GPG key and returns the key ID
+func GpgKeyGen() string {
+	gpgGenTempFile := CreateTempFile()
+	defer func(name string) {
+		_ = os.Remove(name) // error ignored; if the file could be created, it can probably be removed
+	}(gpgGenTempFile.Name())
+
+	// create and write gpg-gen file
+	unixTime := strconv.FormatInt(time.Now().Unix(), 10)
+	_, _ = 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-" + unixTime, "Name-Comment: gpg-libmutton", "Name-Email: github.com/rwinkhart/libmutton", "Expire-Date: 0"}, "\n")) // error ignored; if the file could be created, it can probably be written to
+
+	// close gpg-gen file
+	_ = gpgGenTempFile.Close() // error ignored; if the file could be created, it can probably be closed
+
+	// 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
+	err := cmd.Run()
+	if err != nil {
+		fmt.Println(AnsiError + "Failed to generate GPG key: " + err.Error() + AnsiReset)
+		os.Exit(1)
+	}
+
+	return "libmutton-" + unixTime + " (gpg-libmutton) <github.com/rwinkhart/libmutton>"
+}
+
+// DirInit creates the libmutton directories
+func DirInit(preserveOldConfigDir bool) {
+	// create EntryRoot
+	err := os.MkdirAll(EntryRoot, 0700)
+	if err != nil {
+		fmt.Println(AnsiError + "Failed to create \"" + EntryRoot + "\":" + err.Error() + AnsiReset)
+		os.Exit(1)
+	}
+
+	// remove existing config directory (if it exists and not in append mode)
+	if !preserveOldConfigDir {
+		_, isAccessible := TargetIsFile(ConfigDir, false, 1)
+		if isAccessible {
+			err = os.RemoveAll(ConfigDir)
+			if err != nil {
+				fmt.Println(AnsiError + "Failed to remove existing config directory: " + err.Error() + AnsiReset)
+				os.Exit(1)
+			}
+		}
+	}
+
+	// create config directory w/devices subdirectory
+	err = os.MkdirAll(ConfigDir+PathSeparator+"devices", 0700)
+	if err != nil {
+		fmt.Println(AnsiError + "Failed to create \"" + ConfigDir + "\":" + err.Error() + AnsiReset)
+		os.Exit(1)
+	}
+}