Implement STS account info API (#16115)

cmd/admin-handlers-users.go

@@ -528,6 +528,89 @@ func (a adminAPIHandlers) AddUser(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+// TemporaryAccountInfo - GET /minio/admin/v3/temporary-account-info
+func (a adminAPIHandlers) TemporaryAccountInfo(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "TemporaryAccountInfo")
+
+	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
+
+	// Get current object layer instance.
+	objectAPI := newObjectLayerFn()
+	if objectAPI == nil || globalNotificationSys == nil {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
+		return
+	}
+
+	cred, claims, owner, s3Err := validateAdminSignature(ctx, r, "")
+	if s3Err != ErrNone {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
+		return
+	}
+
+	accessKey := mux.Vars(r)["accessKey"]
+	if accessKey == "" {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
+		return
+	}
+
+	if !globalIAMSys.IsAllowed(iampolicy.Args{
+		AccountName:     cred.AccessKey,
+		Action:          iampolicy.ListTemporaryAccountsAdminAction,
+		ConditionValues: getConditionValues(r, "", cred.AccessKey, claims),
+		IsOwner:         owner,
+		Claims:          claims,
+	}) {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
+		return
+	}
+
+	stsAccount, policy, err := globalIAMSys.GetTemporaryAccount(ctx, accessKey)
+	if err != nil {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+		return
+	}
+
+	var stsAccountPolicy iampolicy.Policy
+
+	if policy != nil {
+		stsAccountPolicy = *policy
+	} else {
+		policiesNames, err := globalIAMSys.PolicyDBGet(stsAccount.ParentUser, false)
+		if err != nil {
+			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+			return
+		}
+		stsAccountPolicy = globalIAMSys.GetCombinedPolicy(policiesNames...)
+	}
+
+	policyJSON, err := json.MarshalIndent(stsAccountPolicy, "", " ")
+	if err != nil {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+		return
+	}
+
+	infoResp := madmin.TemporaryAccountInfoResp{
+		ParentUser:    stsAccount.ParentUser,
+		AccountStatus: stsAccount.Status,
+		ImpliedPolicy: policy == nil,
+		Policy:        string(policyJSON),
+	}
+
+	data, err := json.Marshal(infoResp)
+	if err != nil {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+		return
+	}
+
+	encryptedData, err := madmin.EncryptData(cred.SecretKey, data)
+	if err != nil {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+		return
+	}
+
+	writeSuccessResponseJSON(w, encryptedData)
+}
+
 // AddServiceAccount - PUT /minio/admin/v3/add-service-account
 func (a adminAPIHandlers) AddServiceAccount(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "AddServiceAccount")