How to Scan Files for Viruses in Go

If you allow users to upload files to your website or applications, you may be putting your business at risk to exposure to an array of cyber-attacks. The following API can be used in Go to perform an advanced virus scan on all file uploads, ensuring that no malicious content breaks through your barriers. The process provides wide file format support ranging from Office, PDF, and HTML to .Zip, .Rar, and .Tar, and you can even restrict the type of formats you want to allow for upload.

To use this API, we simply need to input the file, configure the API key, and call the virus scan function:

package main
import (
     "fmt"
     "bytes"
     "mime/multipart"
     "os"
     "path/filepath"
     "io"
     "net/http"
     "io/ioutil"
)
func main() {
url := "https://api.cloudmersive.com/virus/scan/file/advanced"
     method := "POST"
payload := &bytes.Buffer{}
     writer := multipart.NewWriter(payload)
     file, errFile1 := os.Open("/path/to/file")
     defer file.Close()
     part1,
         errFile1 := writer.CreateFormFile("inputFile",filepath.Base("/path/to/file"))
     _, errFile1 = io.Copy(part1, file)
     if errFile1 != nil {
          fmt.Println(errFile1)
          return
     }
     err := writer.Close()
     if err != nil {
          fmt.Println(err)
          return
     }
client := &http.Client {
     }
     req, err := http.NewRequest(method, url, payload)
if err != nil {
          fmt.Println(err)
          return
     }
     req.Header.Add("allowExecutables", "<boolean>")
     req.Header.Add("allowInvalidFiles", "<boolean>")
     req.Header.Add("allowScripts", "<boolean>")
     req.Header.Add("allowPasswordProtectedFiles", "<boolean>")
     req.Header.Add("allowMacros", "<boolean>")
     req.Header.Add("restrictFileTypes", "<string>")
     req.Header.Add("Content-Type", "multipart/form-data")
     req.Header.Add("Apikey", "YOUR-API-KEY-HERE")
req.Header.Set("Content-Type", writer.FormDataContentType())
     res, err := client.Do(req)
     if err != nil {
          fmt.Println(err)
          return
     }
     defer res.Body.Close()
body, err := ioutil.ReadAll(res.Body)
     if err != nil {
          fmt.Println(err)
          return
     }
     fmt.Println(string(body))
}

Note that if you want to utilize the restrictFileTypes parameter as I mentioned above, you will need to provide a set of file formats as a comma-separated list, such as .pdf,.docx,.png. To retrieve your personal API key, head to the Cloudmersive website to register for a free account.