Book Image

Security with Go

By : John Daniel Leon
Book Image

Security with Go

By: John Daniel Leon

Overview of this book

Go is becoming more and more popular as a language for security experts. Its wide use in server and cloud environments, its speed and ease of use, and its evident capabilities for data analysis, have made it a prime choice for developers who need to think about security. Security with Go is the first Golang security book, and it is useful for both blue team and red team applications. With this book, you will learn how to write secure software, monitor your systems, secure your data, attack systems, and extract information. Defensive topics include cryptography, forensics, packet capturing, and building secure web applications. Offensive topics include brute force, port scanning, packet injection, web scraping, social engineering, and post exploitation techniques.
Table of Contents (15 chapters)

Creating temporary files and directories

The ioutil package provides two functions: TempDir() and TempFile(). It is the caller's responsibility to delete the temporary items when done. The only benefit these functions provide is that you can pass it an empty string for the directory, and it will automatically create the item in the system's default temporary folder (/tmp on Linux), since the os.TempDir() function will return the default system temporary directory:

package main 
 
import ( 
   "fmt" 
   "io/ioutil" 
   "log" 
   "os" 
) 
 
func main() { 
   // Create a temp dir in the system default temp folder 
   tempDirPath, err := ioutil.TempDir("", "myTempDir") 
   if err != nil { 
      log.Fatal(err) 
   } 
   fmt.Println("Temp dir created:", tempDirPath) 
 
   // Create a file in new temp directory...