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authorization.go
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/
authorization.go
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package headers
import (
"encoding/base64"
"fmt"
"strings"
"github.com/cobalt-robotics/gortsplib/pkg/base"
)
// Authorization is an Authorization header.
type Authorization struct {
// authentication method
Method AuthMethod
// basic user
BasicUser string
// basic password
BasicPass string
// digest values
DigestValues Authenticate
}
// Unmarshal decodes an Authorization header.
func (h *Authorization) Unmarshal(v base.HeaderValue) error {
if len(v) == 0 {
return fmt.Errorf("value not provided")
}
if len(v) > 1 {
return fmt.Errorf("value provided multiple times (%v)", v)
}
v0 := v[0]
switch {
case strings.HasPrefix(v0, "Basic "):
h.Method = AuthBasic
v0 = v0[len("Basic "):]
tmp, err := base64.StdEncoding.DecodeString(v0)
if err != nil {
return fmt.Errorf("invalid value")
}
tmp2 := strings.Split(string(tmp), ":")
if len(tmp2) != 2 {
return fmt.Errorf("invalid value")
}
h.BasicUser, h.BasicPass = tmp2[0], tmp2[1]
case strings.HasPrefix(v0, "Digest "):
h.Method = AuthDigest
var vals Authenticate
err := vals.Unmarshal(base.HeaderValue{v0})
if err != nil {
return err
}
h.DigestValues = vals
default:
return fmt.Errorf("invalid authorization header")
}
return nil
}
// Marshal encodes an Authorization header.
func (h Authorization) Marshal() base.HeaderValue {
switch h.Method {
case AuthBasic:
response := base64.StdEncoding.EncodeToString([]byte(h.BasicUser + ":" + h.BasicPass))
return base.HeaderValue{"Basic " + response}
default: // AuthDigest
return h.DigestValues.Marshal()
}
}