forked from mirror/jwt
indent error flow
https://code.google.com/p/go-wiki/wiki/CodeReviewComments#Indent_Error_Flow
This commit is contained in:
Cenk Alti
parent
fecd9ab279
commit
9360809320
132
jwt.go
132
jwt.go
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@ -86,73 +86,73 @@ func (t *Token) SigningString() (string, error) {
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// If everything is kosher, err will be nil
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func Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
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parts := strings.Split(tokenString, ".")
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if len(parts) == 3 {
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var err error
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token := &Token{Raw: tokenString}
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// parse Header
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var headerBytes []byte
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if headerBytes, err = DecodeSegment(parts[0]); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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// parse Claims
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var claimBytes []byte
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if claimBytes, err = DecodeSegment(parts[1]); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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if err = json.Unmarshal(claimBytes, &token.Claims); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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// Lookup signature method
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if method, ok := token.Header["alg"].(string); ok {
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if token.Method = GetSigningMethod(method); token.Method == nil {
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return token, &ValidationError{err: "Signing method (alg) is unavailable.", Errors: ValidationErrorUnverifiable}
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}
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} else {
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return token, &ValidationError{err: "Signing method (alg) is unspecified.", Errors: ValidationErrorUnverifiable}
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}
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// Lookup key
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var key []byte
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if key, err = keyFunc(token); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorUnverifiable}
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}
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// Check expiration times
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vErr := &ValidationError{}
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now := TimeFunc().Unix()
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if exp, ok := token.Claims["exp"].(float64); ok {
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if now > int64(exp) {
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vErr.err = "Token is expired"
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vErr.Errors |= ValidationErrorExpired
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}
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}
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if nbf, ok := token.Claims["nbf"].(float64); ok {
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if now < int64(nbf) {
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vErr.err = "Token is not valid yet"
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vErr.Errors |= ValidationErrorNotValidYet
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}
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}
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// Perform validation
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if err = token.Method.Verify(strings.Join(parts[0:2], "."), parts[2], key); err != nil {
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vErr.err = err.Error()
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vErr.Errors |= ValidationErrorSignatureInvalid
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}
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if vErr.valid() {
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token.Valid = true
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return token, nil
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}
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return token, vErr
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if len(parts) != 3 {
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return nil, &ValidationError{err: "Token contains an invalid number of segments", Errors: ValidationErrorMalformed}
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}
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return nil, &ValidationError{err: "Token contains an invalid number of segments", Errors: ValidationErrorMalformed}
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var err error
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token := &Token{Raw: tokenString}
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// parse Header
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var headerBytes []byte
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if headerBytes, err = DecodeSegment(parts[0]); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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// parse Claims
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var claimBytes []byte
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if claimBytes, err = DecodeSegment(parts[1]); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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if err = json.Unmarshal(claimBytes, &token.Claims); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorMalformed}
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}
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// Lookup signature method
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if method, ok := token.Header["alg"].(string); ok {
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if token.Method = GetSigningMethod(method); token.Method == nil {
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return token, &ValidationError{err: "Signing method (alg) is unavailable.", Errors: ValidationErrorUnverifiable}
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}
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} else {
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return token, &ValidationError{err: "Signing method (alg) is unspecified.", Errors: ValidationErrorUnverifiable}
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}
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// Lookup key
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var key []byte
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if key, err = keyFunc(token); err != nil {
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return token, &ValidationError{err: err.Error(), Errors: ValidationErrorUnverifiable}
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}
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// Check expiration times
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vErr := &ValidationError{}
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now := TimeFunc().Unix()
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if exp, ok := token.Claims["exp"].(float64); ok {
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if now > int64(exp) {
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vErr.err = "Token is expired"
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vErr.Errors |= ValidationErrorExpired
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}
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}
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if nbf, ok := token.Claims["nbf"].(float64); ok {
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if now < int64(nbf) {
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vErr.err = "Token is not valid yet"
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vErr.Errors |= ValidationErrorNotValidYet
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}
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}
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// Perform validation
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if err = token.Method.Verify(strings.Join(parts[0:2], "."), parts[2], key); err != nil {
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vErr.err = err.Error()
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vErr.Errors |= ValidationErrorSignatureInvalid
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}
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if vErr.valid() {
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token.Valid = true
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return token, nil
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}
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return token, vErr
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}
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// The errors that might occur when parsing and validating a token
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