From 963811d0225cdb8ef1d027b382711ae9dca7875c Mon Sep 17 00:00:00 2001
From: Drew Gross <drew.a.gross@gmail.com>
Date: Mon, 7 Mar 2016 13:44:45 -0800
Subject: [PATCH] Handle legacy _client_permissions key in _SCHEMA. Fixes #888.

---
 spec/Schema.spec.js          | 29 +++++++++++++++++++++++++++++
 src/Routers/SchemasRouter.js | 30 +++++-------------------------
 src/Schema.js                | 22 ++++++++++++++++++++++
 3 files changed, 56 insertions(+), 25 deletions(-)

diff --git a/spec/Schema.spec.js b/spec/Schema.spec.js
index 6ab08d6a..2912067f 100644
--- a/spec/Schema.spec.js
+++ b/spec/Schema.spec.js
@@ -703,4 +703,33 @@ describe('Schema', () => {
     });
     done();
   });
+
+  it('handles legacy _client_permissions keys without crashing', done => {
+    Schema.mongoSchemaToSchemaAPIResponse({
+      "_id":"_Installation",
+      "_client_permissions":{
+        "get":true,
+        "find":true,
+        "update":true,
+        "create":true,
+        "delete":true,
+      },
+      "_metadata":{
+        "class_permissions":{
+          "get":{"*":true},
+          "find":{"*":true},
+          "update":{"*":true},
+          "create":{"*":true},
+          "delete":{"*":true},
+          "addField":{"*":true},
+        }
+      },
+      "installationId":"string",
+      "deviceToken":"string",
+      "deviceType":"string",
+      "channels":"array",
+      "user":"*_User",
+    });
+    done();
+  });
 });
diff --git a/src/Routers/SchemasRouter.js b/src/Routers/SchemasRouter.js
index 59fef02d..0d1a4cf9 100644
--- a/src/Routers/SchemasRouter.js
+++ b/src/Routers/SchemasRouter.js
@@ -4,7 +4,7 @@ var express = require('express'),
   Parse = require('parse/node').Parse,
   Schema = require('../Schema');
 
-import PromiseRouter from '../PromiseRouter';
+import PromiseRouter   from '../PromiseRouter';
 import * as middleware from "../middlewares";
 
 function classNameMismatchResponse(bodyClass, pathClass) {
@@ -14,30 +14,10 @@ function classNameMismatchResponse(bodyClass, pathClass) {
   );
 }
 
-function mongoSchemaAPIResponseFields(schema) {
-  var fieldNames = Object.keys(schema).filter(key => key !== '_id' && key !== '_metadata');
-  var response = fieldNames.reduce((obj, fieldName) => {
-    obj[fieldName] = Schema.mongoFieldTypeToSchemaAPIType(schema[fieldName])
-    return obj;
-  }, {});
-  response.ACL = {type: 'ACL'};
-  response.createdAt = {type: 'Date'};
-  response.updatedAt = {type: 'Date'};
-  response.objectId = {type: 'String'};
-  return response;
-}
-
-function mongoSchemaToSchemaAPIResponse(schema) {
-  return {
-    className: schema._id,
-    fields: mongoSchemaAPIResponseFields(schema),
-  };
-}
-
 function getAllSchemas(req) {
   return req.config.database.adaptiveCollection('_SCHEMA')
     .then(collection => collection.find({}))
-    .then(schemas => schemas.map(mongoSchemaToSchemaAPIResponse))
+    .then(schemas => schemas.map(Schema.mongoSchemaToSchemaAPIResponse))
     .then(schemas => ({ response: { results: schemas }}));
 }
 
@@ -51,7 +31,7 @@ function getOneSchema(req) {
       }
       return results[0];
     })
-    .then(schema => ({ response: mongoSchemaToSchemaAPIResponse(schema) }));
+    .then(schema => ({ response: Schema.mongoSchemaToSchemaAPIResponse(schema) }));
 }
 
 function createSchema(req) {
@@ -68,7 +48,7 @@ function createSchema(req) {
 
   return req.config.database.loadSchema()
     .then(schema => schema.addClassIfNotExists(className, req.body.fields))
-    .then(result => ({ response: mongoSchemaToSchemaAPIResponse(result) }));
+    .then(result => ({ response: Schema.mongoSchemaToSchemaAPIResponse(result) }));
 }
 
 function modifySchema(req) {
@@ -118,7 +98,7 @@ function modifySchema(req) {
             if (err) {
               reject(err);
             }
-            resolve({ response: mongoSchemaToSchemaAPIResponse(mongoObject.result)});
+            resolve({ response: Schema.mongoSchemaToSchemaAPIResponse(mongoObject.result)});
           })
         }));
     });
diff --git a/src/Schema.js b/src/Schema.js
index 545b4953..3e25b09d 100644
--- a/src/Schema.js
+++ b/src/Schema.js
@@ -760,6 +760,27 @@ function getObjectType(obj) {
   return 'object';
 }
 
+const nonFieldSchemaKeys = ['_id', '_metadata', '_client_permissions'];
+function mongoSchemaAPIResponseFields(schema) {
+  var fieldNames = Object.keys(schema).filter(key => nonFieldSchemaKeys.indexOf(key) === -1);
+  var response = fieldNames.reduce((obj, fieldName) => {
+    obj[fieldName] = mongoFieldTypeToSchemaAPIType(schema[fieldName])
+    return obj;
+  }, {});
+  response.ACL = {type: 'ACL'};
+  response.createdAt = {type: 'Date'};
+  response.updatedAt = {type: 'Date'};
+  response.objectId = {type: 'String'};
+  return response;
+}
+
+function mongoSchemaToSchemaAPIResponse(schema) {
+  return {
+    className: schema._id,
+    fields: mongoSchemaAPIResponseFields(schema),
+  };
+}
+
 module.exports = {
   load: load,
   classNameIsValid: classNameIsValid,
@@ -768,4 +789,5 @@ module.exports = {
   schemaAPITypeToMongoFieldType: schemaAPITypeToMongoFieldType,
   buildMergedSchemaObject: buildMergedSchemaObject,
   mongoFieldTypeToSchemaAPIType: mongoFieldTypeToSchemaAPIType,
+  mongoSchemaToSchemaAPIResponse,
 };