Dependencies for the affinity router and the
affinity routing daemon.
Change-Id: Icda72c3594ef7f8f0bc0c33dc03087a4c25529ca
diff --git a/vendor/github.com/dgrijalva/jwt-go/parser.go b/vendor/github.com/dgrijalva/jwt-go/parser.go
new file mode 100644
index 0000000..d6901d9
--- /dev/null
+++ b/vendor/github.com/dgrijalva/jwt-go/parser.go
@@ -0,0 +1,148 @@
+package jwt
+
+import (
+ "bytes"
+ "encoding/json"
+ "fmt"
+ "strings"
+)
+
+type Parser struct {
+ ValidMethods []string // If populated, only these methods will be considered valid
+ UseJSONNumber bool // Use JSON Number format in JSON decoder
+ SkipClaimsValidation bool // Skip claims validation during token parsing
+}
+
+// Parse, validate, and return a token.
+// keyFunc will receive the parsed token and should return the key for validating.
+// If everything is kosher, err will be nil
+func (p *Parser) Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
+ return p.ParseWithClaims(tokenString, MapClaims{}, keyFunc)
+}
+
+func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
+ token, parts, err := p.ParseUnverified(tokenString, claims)
+ if err != nil {
+ return token, err
+ }
+
+ // Verify signing method is in the required set
+ if p.ValidMethods != nil {
+ var signingMethodValid = false
+ var alg = token.Method.Alg()
+ for _, m := range p.ValidMethods {
+ if m == alg {
+ signingMethodValid = true
+ break
+ }
+ }
+ if !signingMethodValid {
+ // signing method is not in the listed set
+ return token, NewValidationError(fmt.Sprintf("signing method %v is invalid", alg), ValidationErrorSignatureInvalid)
+ }
+ }
+
+ // Lookup key
+ var key interface{}
+ if keyFunc == nil {
+ // keyFunc was not provided. short circuiting validation
+ return token, NewValidationError("no Keyfunc was provided.", ValidationErrorUnverifiable)
+ }
+ if key, err = keyFunc(token); err != nil {
+ // keyFunc returned an error
+ if ve, ok := err.(*ValidationError); ok {
+ return token, ve
+ }
+ return token, &ValidationError{Inner: err, Errors: ValidationErrorUnverifiable}
+ }
+
+ vErr := &ValidationError{}
+
+ // Validate Claims
+ if !p.SkipClaimsValidation {
+ if err := token.Claims.Valid(); err != nil {
+
+ // If the Claims Valid returned an error, check if it is a validation error,
+ // If it was another error type, create a ValidationError with a generic ClaimsInvalid flag set
+ if e, ok := err.(*ValidationError); !ok {
+ vErr = &ValidationError{Inner: err, Errors: ValidationErrorClaimsInvalid}
+ } else {
+ vErr = e
+ }
+ }
+ }
+
+ // Perform validation
+ token.Signature = parts[2]
+ if err = token.Method.Verify(strings.Join(parts[0:2], "."), token.Signature, key); err != nil {
+ vErr.Inner = err
+ vErr.Errors |= ValidationErrorSignatureInvalid
+ }
+
+ if vErr.valid() {
+ token.Valid = true
+ return token, nil
+ }
+
+ return token, vErr
+}
+
+// WARNING: Don't use this method unless you know what you're doing
+//
+// This method parses the token but doesn't validate the signature. It's only
+// ever useful in cases where you know the signature is valid (because it has
+// been checked previously in the stack) and you want to extract values from
+// it.
+func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Token, parts []string, err error) {
+ parts = strings.Split(tokenString, ".")
+ if len(parts) != 3 {
+ return nil, parts, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
+ }
+
+ token = &Token{Raw: tokenString}
+
+ // parse Header
+ var headerBytes []byte
+ if headerBytes, err = DecodeSegment(parts[0]); err != nil {
+ if strings.HasPrefix(strings.ToLower(tokenString), "bearer ") {
+ return token, parts, NewValidationError("tokenstring should not contain 'bearer '", ValidationErrorMalformed)
+ }
+ return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+ }
+ if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
+ return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+ }
+
+ // parse Claims
+ var claimBytes []byte
+ token.Claims = claims
+
+ if claimBytes, err = DecodeSegment(parts[1]); err != nil {
+ return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+ }
+ dec := json.NewDecoder(bytes.NewBuffer(claimBytes))
+ if p.UseJSONNumber {
+ dec.UseNumber()
+ }
+ // JSON Decode. Special case for map type to avoid weird pointer behavior
+ if c, ok := token.Claims.(MapClaims); ok {
+ err = dec.Decode(&c)
+ } else {
+ err = dec.Decode(&claims)
+ }
+ // Handle decode error
+ if err != nil {
+ return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+ }
+
+ // Lookup signature method
+ if method, ok := token.Header["alg"].(string); ok {
+ if token.Method = GetSigningMethod(method); token.Method == nil {
+ return token, parts, NewValidationError("signing method (alg) is unavailable.", ValidationErrorUnverifiable)
+ }
+ } else {
+ return token, parts, NewValidationError("signing method (alg) is unspecified.", ValidationErrorUnverifiable)
+ }
+
+ return token, parts, nil
+}