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package git
import (
"bytes"
"fmt"
"time"
)
// FallbackTimeValue is the value returned by `SafeTimeParse` in case it
// encounters a parse error. It's the maximum time value possible in golang.
// See https://gitlab.com/gitlab-org/gitaly/issues/556#note_40289573
var FallbackTimeValue = time.Unix(1<<63-62135596801, 999999999)
func validateRevision(revision []byte, allowEmpty bool) error {
if !allowEmpty && len(revision) == 0 {
return fmt.Errorf("empty revision")
}
if bytes.HasPrefix(revision, []byte("-")) {
return fmt.Errorf("revision can't start with '-'")
}
if bytes.Contains(revision, []byte(" ")) {
return fmt.Errorf("revision can't contain whitespace")
}
if bytes.Contains(revision, []byte("\x00")) {
return fmt.Errorf("revision can't contain NUL")
}
if bytes.Contains(revision, []byte(":")) {
return fmt.Errorf("revision can't contain ':'")
}
return nil
}
// ValidateRevisionAllowEmpty checks if a revision looks valid, but allows
// empty strings
func ValidateRevisionAllowEmpty(revision []byte) error {
return validateRevision(revision, true)
}
// ValidateRevision checks if a revision looks valid
func ValidateRevision(revision []byte) error {
return validateRevision(revision, false)
}
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