Update Azure SDK and support additional authentication schemes

Microsoft has updated the golang Azure SDK significantly.  Update the
azure storage driver to use the new SDK.  Add support for client
secret and MSI authentication schemes in addition to shared key
authentication.

Implement rootDirectory support for the azure storage driver to mirror
the S3 driver.

Signed-off-by: Kirat Singh <kirat.singh@beacon.io>

Co-authored-by: Cory Snider <corhere@gmail.com>

vendor/github.com/golang-jwt/jwt/v4/README.md

@@ -36,9 +36,23 @@ The part in the middle is the interesting bit.  It's called the Claims and conta
 
 This library supports the parsing and verification as well as the generation and signing of JWTs.  Current supported signing algorithms are HMAC SHA, RSA, RSA-PSS, and ECDSA, though hooks are present for adding your own.
 
+## Installation Guidelines
+
+1. To install the jwt package, you first need to have [Go](https://go.dev/doc/install) installed, then you can use the command below to add `jwt-go` as a dependency in your Go program.
+
+```sh
+go get -u github.com/golang-jwt/jwt/v4
+```
+
+2. Import it in your code:
+
+```go
+import "github.com/golang-jwt/jwt/v4"
+```
+
 ## Examples
 
-See [the project documentation](https://pkg.go.dev/github.com/golang-jwt/jwt) for examples of usage:
+See [the project documentation](https://pkg.go.dev/github.com/golang-jwt/jwt/v4) for examples of usage:
 
 * [Simple example of parsing and validating a token](https://pkg.go.dev/github.com/golang-jwt/jwt#example-Parse-Hmac)
 * [Simple example of building and signing a token](https://pkg.go.dev/github.com/golang-jwt/jwt#example-New-Hmac)
@@ -46,9 +60,17 @@ See [the project documentation](https://pkg.go.dev/github.com/golang-jwt/jwt) fo
 
 ## Extensions
 
-This library publishes all the necessary components for adding your own signing methods.  Simply implement the `SigningMethod` interface and register a factory method using `RegisterSigningMethod`.  
+This library publishes all the necessary components for adding your own signing methods or key functions.  Simply implement the `SigningMethod` interface and register a factory method using `RegisterSigningMethod` or provide a `jwt.Keyfunc`.
 
-Here's an example of an extension that integrates with multiple Google Cloud Platform signing tools (AppEngine, IAM API, Cloud KMS): https://github.com/someone1/gcp-jwt-go
+A common use case would be integrating with different 3rd party signature providers, like key management services from various cloud providers or Hardware Security Modules (HSMs) or to implement additional standards.
+
+| Extension | Purpose                                                                                                  | Repo                                       |
+| --------- | -------------------------------------------------------------------------------------------------------- | ------------------------------------------ |
+| GCP       | Integrates with multiple Google Cloud Platform signing tools (AppEngine, IAM API, Cloud KMS)             | https://github.com/someone1/gcp-jwt-go     |
+| AWS       | Integrates with AWS Key Management Service, KMS                                                          | https://github.com/matelang/jwt-go-aws-kms |
+| JWKS      | Provides support for JWKS ([RFC 7517](https://datatracker.ietf.org/doc/html/rfc7517)) as a `jwt.Keyfunc` | https://github.com/MicahParks/keyfunc       |
+
+*Disclaimer*: Unless otherwise specified, these integrations are maintained by third parties and should not be considered as a primary offer by any of the mentioned cloud providers
 
 ## Compliance
 
@@ -112,3 +134,5 @@ This library uses descriptive error messages whenever possible. If you are not g
 Documentation can be found [on pkg.go.dev](https://pkg.go.dev/github.com/golang-jwt/jwt).
 
 The command line utility included in this project (cmd/jwt) provides a straightforward example of token creation and parsing as well as a useful tool for debugging your own integration. You'll also find several implementation examples in the documentation.
+
+[golang-jwt](https://github.com/orgs/golang-jwt) incorporates a modified version of the JWT logo, which is distributed under the terms of the [MIT License](https://github.com/jsonwebtoken/jsonwebtoken.github.io/blob/master/LICENSE.txt).

vendor/github.com/golang-jwt/jwt/v4/SECURITY.md

@@ -0,0 +1,19 @@
+# Security Policy
+
+## Supported Versions
+
+As of February 2022 (and until this document is updated), the latest version `v4` is supported.
+
+## Reporting a Vulnerability
+
+If you think you found a vulnerability, and even if you are not sure, please report it to jwt-go-security@googlegroups.com or one of the other [golang-jwt maintainers](https://github.com/orgs/golang-jwt/people). Please try be explicit, describe steps to reproduce the security issue with code example(s).
+
+You will receive a response within a timely manner. If the issue is confirmed, we will do our best to release a patch as soon as possible given the complexity of the problem.
+
+## Public Discussions
+
+Please avoid publicly discussing a potential security vulnerability.
+
+Let's take this offline and find a solution first, this limits the potential impact as much as possible.
+
+We appreciate your help!

vendor/github.com/golang-jwt/jwt/v4/claims.go

@@ -56,17 +56,17 @@ func (c RegisteredClaims) Valid() error {
 	// default value in Go, let's not fail the verification for them.
 	if !c.VerifyExpiresAt(now, false) {
 		delta := now.Sub(c.ExpiresAt.Time)
-		vErr.Inner = fmt.Errorf("token is expired by %v", delta)
+		vErr.Inner = fmt.Errorf("%s by %s", ErrTokenExpired, delta)
 		vErr.Errors |= ValidationErrorExpired
 	}
 
 	if !c.VerifyIssuedAt(now, false) {
-		vErr.Inner = fmt.Errorf("token used before issued")
+		vErr.Inner = ErrTokenUsedBeforeIssued
 		vErr.Errors |= ValidationErrorIssuedAt
 	}
 
 	if !c.VerifyNotBefore(now, false) {
-		vErr.Inner = fmt.Errorf("token is not valid yet")
+		vErr.Inner = ErrTokenNotValidYet
 		vErr.Errors |= ValidationErrorNotValidYet
 	}
 
@@ -149,17 +149,17 @@ func (c StandardClaims) Valid() error {
 	// default value in Go, let's not fail the verification for them.
 	if !c.VerifyExpiresAt(now, false) {
 		delta := time.Unix(now, 0).Sub(time.Unix(c.ExpiresAt, 0))
-		vErr.Inner = fmt.Errorf("token is expired by %v", delta)
+		vErr.Inner = fmt.Errorf("%s by %s", ErrTokenExpired, delta)
 		vErr.Errors |= ValidationErrorExpired
 	}
 
 	if !c.VerifyIssuedAt(now, false) {
-		vErr.Inner = fmt.Errorf("token used before issued")
+		vErr.Inner = ErrTokenUsedBeforeIssued
 		vErr.Errors |= ValidationErrorIssuedAt
 	}
 
 	if !c.VerifyNotBefore(now, false) {
-		vErr.Inner = fmt.Errorf("token is not valid yet")
+		vErr.Inner = ErrTokenNotValidYet
 		vErr.Errors |= ValidationErrorNotValidYet
 	}
 

vendor/github.com/golang-jwt/jwt/v4/errors.go

@@ -9,6 +9,18 @@ var (
 	ErrInvalidKey      = errors.New("key is invalid")
 	ErrInvalidKeyType  = errors.New("key is of invalid type")
 	ErrHashUnavailable = errors.New("the requested hash function is unavailable")
+
+	ErrTokenMalformed        = errors.New("token is malformed")
+	ErrTokenUnverifiable     = errors.New("token is unverifiable")
+	ErrTokenSignatureInvalid = errors.New("token signature is invalid")
+
+	ErrTokenInvalidAudience  = errors.New("token has invalid audience")
+	ErrTokenExpired          = errors.New("token is expired")
+	ErrTokenUsedBeforeIssued = errors.New("token used before issued")
+	ErrTokenInvalidIssuer    = errors.New("token has invalid issuer")
+	ErrTokenNotValidYet      = errors.New("token is not valid yet")
+	ErrTokenInvalidId        = errors.New("token has invalid id")
+	ErrTokenInvalidClaims    = errors.New("token has invalid claims")
 )
 
 // The errors that might occur when parsing and validating a token
@@ -62,3 +74,39 @@ func (e *ValidationError) Unwrap() error {
 func (e *ValidationError) valid() bool {
 	return e.Errors == 0
 }
+
+// Is checks if this ValidationError is of the supplied error. We are first checking for the exact error message
+// by comparing the inner error message. If that fails, we compare using the error flags. This way we can use
+// custom error messages (mainly for backwards compatability) and still leverage errors.Is using the global error variables.
+func (e *ValidationError) Is(err error) bool {
+	// Check, if our inner error is a direct match
+	if errors.Is(errors.Unwrap(e), err) {
+		return true
+	}
+
+	// Otherwise, we need to match using our error flags
+	switch err {
+	case ErrTokenMalformed:
+		return e.Errors&ValidationErrorMalformed != 0
+	case ErrTokenUnverifiable:
+		return e.Errors&ValidationErrorUnverifiable != 0
+	case ErrTokenSignatureInvalid:
+		return e.Errors&ValidationErrorSignatureInvalid != 0
+	case ErrTokenInvalidAudience:
+		return e.Errors&ValidationErrorAudience != 0
+	case ErrTokenExpired:
+		return e.Errors&ValidationErrorExpired != 0
+	case ErrTokenUsedBeforeIssued:
+		return e.Errors&ValidationErrorIssuedAt != 0
+	case ErrTokenInvalidIssuer:
+		return e.Errors&ValidationErrorIssuer != 0
+	case ErrTokenNotValidYet:
+		return e.Errors&ValidationErrorNotValidYet != 0
+	case ErrTokenInvalidId:
+		return e.Errors&ValidationErrorId != 0
+	case ErrTokenInvalidClaims:
+		return e.Errors&ValidationErrorClaimsInvalid != 0
+	}
+
+	return false
+}

vendor/github.com/golang-jwt/jwt/v4/map_claims.go

@@ -126,16 +126,19 @@ func (m MapClaims) Valid() error {
 	now := TimeFunc().Unix()
 
 	if !m.VerifyExpiresAt(now, false) {
+		// TODO(oxisto): this should be replaced with ErrTokenExpired
 		vErr.Inner = errors.New("Token is expired")
 		vErr.Errors |= ValidationErrorExpired
 	}
 
 	if !m.VerifyIssuedAt(now, false) {
+		// TODO(oxisto): this should be replaced with ErrTokenUsedBeforeIssued
 		vErr.Inner = errors.New("Token used before issued")
 		vErr.Errors |= ValidationErrorIssuedAt
 	}
 
 	if !m.VerifyNotBefore(now, false) {
+		// TODO(oxisto): this should be replaced with ErrTokenNotValidYet
 		vErr.Inner = errors.New("Token is not valid yet")
 		vErr.Errors |= ValidationErrorNotValidYet
 	}

vendor/github.com/golang-jwt/jwt/v4/parser_option.go

@@ -1,6 +1,6 @@
 package jwt
 
-// ParserOption is used to implement functional-style options that modify the behaviour of the parser. To add
+// ParserOption is used to implement functional-style options that modify the behavior of the parser. To add
 // new options, just create a function (ideally beginning with With or Without) that returns an anonymous function that
 // takes a *Parser type as input and manipulates its configuration accordingly.
 type ParserOption func(*Parser)
@@ -13,7 +13,7 @@ func WithValidMethods(methods []string) ParserOption {
 	}
 }
 
-// WithJSONNumber is an option to configure the underyling JSON parser with UseNumber
+// WithJSONNumber is an option to configure the underlying JSON parser with UseNumber
 func WithJSONNumber() ParserOption {
 	return func(p *Parser) {
 		p.UseJSONNumber = true

vendor/github.com/golang-jwt/jwt/v4/rsa_pss.go

@@ -1,3 +1,4 @@
+//go:build go1.4
 // +build go1.4
 
 package jwt

vendor/github.com/golang-jwt/jwt/v4/token.go

@@ -7,7 +7,6 @@ import (
 	"time"
 )
 
-
 // DecodePaddingAllowed will switch the codec used for decoding JWTs respectively. Note that the JWS RFC7515
 // states that the tokens will utilize a Base64url encoding with no padding. Unfortunately, some implementations
 // of JWT are producing non-standard tokens, and thus require support for decoding. Note that this is a global
@@ -74,22 +73,19 @@ func (t *Token) SignedString(key interface{}) (string, error) {
 // the SignedString.
 func (t *Token) SigningString() (string, error) {
 	var err error
-	parts := make([]string, 2)
-	for i := range parts {
-		var jsonValue []byte
-		if i == 0 {
-			if jsonValue, err = json.Marshal(t.Header); err != nil {
-				return "", err
-			}
-		} else {
-			if jsonValue, err = json.Marshal(t.Claims); err != nil {
-				return "", err
-			}
-		}
+	var jsonValue []byte
 
-		parts[i] = EncodeSegment(jsonValue)
+	if jsonValue, err = json.Marshal(t.Header); err != nil {
+		return "", err
 	}
-	return strings.Join(parts, "."), nil
+	header := EncodeSegment(jsonValue)
+
+	if jsonValue, err = json.Marshal(t.Claims); err != nil {
+		return "", err
+	}
+	claim := EncodeSegment(jsonValue)
+
+	return strings.Join([]string{header, claim}, "."), nil
 }
 
 // Parse parses, validates, verifies the signature and returns the parsed token.

vendor/github.com/golang-jwt/jwt/v4/types.go

@@ -49,9 +49,27 @@ func newNumericDateFromSeconds(f float64) *NumericDate {
 // MarshalJSON is an implementation of the json.RawMessage interface and serializes the UNIX epoch
 // represented in NumericDate to a byte array, using the precision specified in TimePrecision.
 func (date NumericDate) MarshalJSON() (b []byte, err error) {
-	f := float64(date.Truncate(TimePrecision).UnixNano()) / float64(time.Second)
+	var prec int
+	if TimePrecision < time.Second {
+		prec = int(math.Log10(float64(time.Second) / float64(TimePrecision)))
+	}
+	truncatedDate := date.Truncate(TimePrecision)
 
-	return []byte(strconv.FormatFloat(f, 'f', -1, 64)), nil
+	// For very large timestamps, UnixNano would overflow an int64, but this
+	// function requires nanosecond level precision, so we have to use the
+	// following technique to get round the issue:
+	// 1. Take the normal unix timestamp to form the whole number part of the
+	//    output,
+	// 2. Take the result of the Nanosecond function, which retuns the offset
+	//    within the second of the particular unix time instance, to form the
+	//    decimal part of the output
+	// 3. Concatenate them to produce the final result
+	seconds := strconv.FormatInt(truncatedDate.Unix(), 10)
+	nanosecondsOffset := strconv.FormatFloat(float64(truncatedDate.Nanosecond())/float64(time.Second), 'f', prec, 64)
+
+	output := append([]byte(seconds), []byte(nanosecondsOffset)[1:]...)
+
+	return output, nil
 }
 
 // UnmarshalJSON is an implementation of the json.RawMessage interface and deserializses a