51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package operator
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import (
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"encoding/hex"
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"strings"
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)
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const sha256prefix = "sha256:"
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const sha512prefix = "sha512:"
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func normalizeSHADigest(digest string) string {
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if stringLikeSHA256Digest(digest) && !strings.HasPrefix(digest, sha256prefix) {
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digest = sha256prefix + digest
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} else if stringLikeSHA512Digest(digest) && !strings.HasPrefix(digest, sha512prefix) {
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digest = sha512prefix + digest
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}
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return digest
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}
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func stringLikeSHADigest(some string) bool {
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return stringLikeSHA256Digest(some) || stringLikeSHA512Digest(some)
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}
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func stringLikeSHA256Digest(some string) bool {
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if strings.HasPrefix(some, sha256prefix) {
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some = strings.TrimPrefix(some, sha256prefix)
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}
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_, err := hex.DecodeString(some)
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if err != nil {
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return false
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}
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if len(some) == 64 {
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return true
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}
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return false
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}
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func stringLikeSHA512Digest(some string) bool {
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if strings.HasPrefix(some, sha512prefix) {
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some = strings.TrimPrefix(some, sha512prefix)
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}
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_, err := hex.DecodeString(some)
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if err != nil {
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return false
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}
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if len(some) == 128 {
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return true
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}
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return false
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}
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