github.com/crewjam/saml@v0.4.14/time.go (about)

     1  package saml
     2  
     3  import "time"
     4  
     5  // RelaxedTime is a version of time.Time that supports the time format
     6  // found in SAML documents.
     7  type RelaxedTime time.Time
     8  
     9  const timeFormat = "2006-01-02T15:04:05.999Z07:00"
    10  
    11  // MarshalText implements encoding.TextMarshaler
    12  func (m RelaxedTime) MarshalText() ([]byte, error) {
    13  	// According to section 1.2.2 of the OASIS SAML 1.1 spec, we can't trust
    14  	// other applications to handle time resolution finer than a millisecond.
    15  	//
    16  	// The time MUST be expressed in UTC.
    17  	return []byte(m.String()), nil
    18  }
    19  
    20  func (m RelaxedTime) String() string {
    21  	return time.Time(m).Round(time.Millisecond).UTC().Format(timeFormat)
    22  }
    23  
    24  // UnmarshalText implements encoding.TextUnmarshaler
    25  func (m *RelaxedTime) UnmarshalText(text []byte) error {
    26  	if len(text) == 0 {
    27  		*m = RelaxedTime(time.Time{})
    28  		return nil
    29  	}
    30  	t, err1 := time.Parse(time.RFC3339, string(text))
    31  	if err1 == nil {
    32  		t = t.Round(time.Millisecond)
    33  		*m = RelaxedTime(t)
    34  		return nil
    35  	}
    36  
    37  	t, err2 := time.Parse(time.RFC3339Nano, string(text))
    38  	if err2 == nil {
    39  		t = t.Round(time.Millisecond)
    40  		*m = RelaxedTime(t)
    41  		return nil
    42  	}
    43  
    44  	t, err2 = time.Parse("2006-01-02T15:04:05.999999999", string(text))
    45  	if err2 == nil {
    46  		t = t.Round(time.Millisecond)
    47  		*m = RelaxedTime(t)
    48  		return nil
    49  	}
    50  
    51  	return err1
    52  }