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