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/**
* Copyright 2013, 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var when = require('when');
var storageModule;
var settingsAvailable;
function moduleSelector(aSettings) {
var toReturn;
if (aSettings.storageModule) {
if (typeof aSettings.storageModule === "string") {
// TODO: allow storage modules to be specified by absolute path
toReturn = require("./"+aSettings.storageModule);
} else {
toReturn = aSettings.storageModule;
}
} else {
toReturn = require("./localfilesystem");
}
return toReturn;
}
function is_malicious(path) {
return path.indexOf('../') != -1 || path.indexOf('..\\') != -1;
}
var storageModuleInterface = {
init: function(settings) {
try {
storageModule = moduleSelector(settings);
settingsAvailable = storageModule.hasOwnProperty("getSettings") && storageModule.hasOwnProperty("saveSettings");
} catch (e) {
return when.reject(e);
}
return storageModule.init(settings);
},
getFlows: function() {
return storageModule.getFlows();
},
saveFlows: function(flows) {
return storageModule.saveFlows(flows);
},
getCredentials: function() {
return storageModule.getCredentials();
},
saveCredentials: function(credentials) {
return storageModule.saveCredentials(credentials);
},
getSettings: function() {
if (settingsAvailable) {
return storageModule.getSettings();
} else {
return when.resolve(null);
}
},
saveSettings: function(settings) {
if (settingsAvailable) {
return storageModule.saveSettings(settings);
} else {
return when.resolve();
}
},
/* Library Functions */
getAllFlows: function() {
return storageModule.getAllFlows();
},
getFlow: function(fn) {
if (is_malicious(fn)) {
return when.reject(new Error('forbidden flow name'));
}
return storageModule.getFlow(fn);
},
saveFlow: function(fn, data) {
if (is_malicious(fn)) {
return when.reject(new Error('forbidden flow name'));
}
return storageModule.saveFlow(fn, data);
},
getLibraryEntry: function(type, path) {
if (is_malicious(path)) {
return when.reject(new Error('forbidden flow name'));
}
return storageModule.getLibraryEntry(type, path);
},
saveLibraryEntry: function(type, path, meta, body) {
if (is_malicious(path)) {
return when.reject(new Error('forbidden flow name'));
}
return storageModule.saveLibraryEntry(type, path, meta, body);
}
}
module.exports = storageModuleInterface;
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