From 23d8742f0d95096b92f11729fb47f86ac3b68d43 Mon Sep 17 00:00:00 2001
From: Wim <wim@42.be>
Date: Sat, 18 Jul 2020 17:27:41 +0200
Subject: Update dependencies for 1.18.0 release (#1175)

---
 .../yaegashi/msgraph.go/msauth/msauth.go           | 60 +++++++++++++++++-----
 1 file changed, 47 insertions(+), 13 deletions(-)

(limited to 'vendor/github.com/yaegashi/msgraph.go/msauth/msauth.go')

diff --git a/vendor/github.com/yaegashi/msgraph.go/msauth/msauth.go b/vendor/github.com/yaegashi/msgraph.go/msauth/msauth.go
index c2a86985..014f2522 100644
--- a/vendor/github.com/yaegashi/msgraph.go/msauth/msauth.go
+++ b/vendor/github.com/yaegashi/msgraph.go/msauth/msauth.go
@@ -36,10 +36,6 @@ func (t *TokenError) Error() string {
 	return fmt.Sprintf("%s: %s", t.ErrorObject, t.ErrorDescription)
 }
 
-func generateKey(tenantID, clientID string) string {
-	return fmt.Sprintf("%s:%s", tenantID, clientID)
-}
-
 func deviceCodeURL(tenantID string) string {
 	return fmt.Sprintf(endpointURLFormat, tenantID, "devicecode")
 }
@@ -65,6 +61,7 @@ func (e *tokenJSON) expiry() (t time.Time) {
 // Manager is oauth2 token cache manager
 type Manager struct {
 	mu         sync.Mutex
+	Dirty      bool
 	TokenCache map[string]*oauth2.Token
 }
 
@@ -87,27 +84,64 @@ func (m *Manager) SaveBytes() ([]byte, error) {
 	return json.Marshal(m.TokenCache)
 }
 
-// LoadFile loads token cache from file
+// LoadFile loads token cache from file with dirty state control
 func (m *Manager) LoadFile(path string) error {
-	b, err := ioutil.ReadFile(path)
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	b, err := ReadLocation(path)
+	if err != nil {
+		return err
+	}
+	err = json.Unmarshal(b, &m.TokenCache)
 	if err != nil {
 		return err
 	}
-	return m.LoadBytes(b)
+	m.Dirty = false
+	return nil
 }
 
-// SaveFile saves token cache to file
+// SaveFile saves token cache to file with dirty state control
 func (m *Manager) SaveFile(path string) error {
-	b, err := m.SaveBytes()
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	if !m.Dirty {
+		return nil
+	}
+	b, err := json.Marshal(m.TokenCache)
+	if err != nil {
+		return err
+	}
+	err = WriteLocation(path, b, 0644)
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(path, b, 0644)
+	m.Dirty = false
+	return nil
+}
+
+// CacheKey generates a token cache key from tenantID/clientID
+func CacheKey(tenantID, clientID string) string {
+	return fmt.Sprintf("%s:%s", tenantID, clientID)
+}
+
+// GetToken gets a token from token cache
+func (m *Manager) GetToken(cacheKey string) (*oauth2.Token, bool) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	token, ok := m.TokenCache[cacheKey]
+	return token, ok
 }
 
-// Cache stores a token into token cache
-func (m *Manager) Cache(tenantID, clientID string, token *oauth2.Token) {
-	m.TokenCache[generateKey(tenantID, clientID)] = token
+// PutToken puts a token into token cache
+func (m *Manager) PutToken(cacheKey string, token *oauth2.Token) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	oldToken, ok := m.TokenCache[cacheKey]
+	if ok && *oldToken == *token {
+		return
+	}
+	m.TokenCache[cacheKey] = token
+	m.Dirty = true
 }
 
 // requestToken requests a token from the token endpoint
-- 
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