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package main
import (
"fmt"
"io"
"net/http"
"os"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
)
var response http.Response
func main() {
// s3 bucket name
bucketName := "YOUR_S3_BUCKET_NAME"
// Create a Session
sess := session.Must(session.NewSessionWithOptions(session.Options{
SharedConfigState: session.SharedConfigEnable,
}))
// S3 client
svc := s3.New(sess)
// Check if s3 bucket is public
url := "https://" + bucketName + ".s3.amazonaws.com/"
// send http request
response, err := http.Get(url)
if err != nil {
fmt.Println("Http request err:", err)
os.Exit(1)
}
defer response.Body.Close()
// Get status code
if response.StatusCode == http.StatusOK {
fmt.Printf("This s3 bucket %s is public!\n", bucketName)
} else if response.StatusCode == http.StatusNotFound {
fmt.Printf("This s3 bucket %s is public!\n", url)
} else {
fmt.Printf("%s: Unknown status code %d\n", url, response.StatusCode)
}
// Check if s3 bucket can list object
if listObjectsInBucket(response) {
fmt.Printf("This s3 bucket %s can list object!\n", bucketName)
} else {
fmt.Printf("This s3 bucket %s can not list object!\n", bucketName)
os.Exit(1)
}
// Check if s3 bucket can upload object
if canModifyObject(svc, bucketName, "S3/test.txt") {
fmt.Printf("This s3 bucket %s can upload object!\n", bucketName)
} else {
fmt.Printf("This s3 bucket %s can not upload object!\n", bucketName)
os.Exit(1)
}
}
// check s3 bucket have ListObject
func listObjectsInBucket(response *http.Response) bool {
body, err := io.ReadAll(response.Body)
if err != nil {
fmt.Println("ReadAll err:", err)
}
if strings.Contains(string(body), "ListBucketResult") {
return true
} else {
return false
}
}
// check s3 bucket have WriteObject (can upload or modify files)
func canModifyObject(svc *s3.S3, bucketName string, filePath string) bool {
file, err := os.Open(filePath)
if err != nil {
fmt.Println("Open file err:", err)
return false
}
defer file.Close()
input := &s3.PutObjectInput{
Body: file,
Bucket: aws.String(bucketName),
Key: aws.String("test"),
}
input.Body = file
_, err = svc.PutObject(input)
if err != nil {
fmt.Println("Failed to upload file.")
return false
}
return true
}
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