Disable Java in Firefox

gistfile1.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"os/user"
	"path"
	"strings"
)

const FILE_NAME = "pluginreg.dat"
const SEARCH_STRING = "Displays Java applet content"
const LINE_ENDING = "\n"

func main() {

	basePath := getHomeDirectory()
	profilePath := getFireFoxProfileDirectory(basePath)
	profileContents := getDirectories(profilePath)

	fmt.Printf(profilePath)

	for i := 0; i < len(profileContents); i++ {

		file := profileContents[i]

		if file.IsDir() {
			fmt.Printf("File Name: %s\n", file.Name())
			processContets(profilePath, file.Name())
		}
	}
}

func getHomeDirectory() (string) {
	currentUser, err := user.Current()

	if err != nil {
		panic(err)
	}
	return currentUser.HomeDir
}

func getFireFoxProfileDirectory(basePath string) (string) {
	return path.Join(
		basePath, 
		"Library", 
		"Application Support", 
		"Firefox", 
		"Profiles")
}

func getDirectories(path string) ([]os.FileInfo) {
	files, err := ioutil.ReadDir(path)

	if err != nil {
		panic(err)
	}

	return files
}

func processContets(basePath string, dirName string) {
	fullPath := path.Join(basePath, dirName, FILE_NAME)
	lines := getLines(fullPath)

	for i, line := range lines {
		
		if strings.Contains(line, SEARCH_STRING) {
			
			configLine := i - 1
			lines[configLine] = processLine(lines[configLine])
			fmt.Printf("%s\n", lines[configLine])
		}
	}

	writeContents(lines, fullPath)
}

func getLines(path string) (lines []string) {
    content, err := ioutil.ReadFile(path)

    if err != nil {
    	panic(err)
    }

    return strings.Split(string(content), LINE_ENDING)
}

func processLine(line string) (string) {
	lines := strings.Split(line, ":")
	index := len(lines) - 2
	lines[index] = "0"

	return strings.Join(lines, ":")
}

func writeContents(contents []string, fullPath string) {
	ioutil.WriteFile(
		fullPath, 
		[]byte(strings.Join(
			contents, 
			LINE_ENDING)), 
		0644)
}