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package s3bucket
import (
"fmt"
"net"
"strings"
"unicode"
)
// https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html
func VerifyS3BucketName(name string) (err error) {
if len(name) < 3 || len(name) > 63 {
return fmt.Errorf("bucket name must between [3, 63] characters")
}
for idx, ch := range name {
if !(unicode.IsLower(ch) || ch == '.' || ch == '-' || unicode.IsNumber(ch)) {
return fmt.Errorf("bucket name can only contain lower case characters, numbers, dots, and hyphens")
}
if idx > 0 && (ch == '.' && name[idx-1] == '.') {
return fmt.Errorf("bucket names must not contain two adjacent periods")
}
//TODO buckets with s3 transfer accleration cannot have . in name
}
if name[0] == '.' || name[0] == '-' {
return fmt.Errorf("name must start with number or lower case character")
}
if name[len(name)-1] == '.' || name[len(name)-1] == '-' {
return fmt.Errorf("name must end with number or lower case character")
}
if strings.HasPrefix(name, "xn--") {
return fmt.Errorf("prefix xn-- is a reserved and not allowed in bucket prefix")
}
if strings.HasSuffix(name, "-s3alias") {
return fmt.Errorf("suffix -s3alias is a reserved and not allowed in bucket suffix")
}
if net.ParseIP(name) != nil {
return fmt.Errorf("bucket name cannot be ip addresses")
}
return nil
}
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