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node-red/red/nodes/credentials.js

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/**
* Copyright 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 util = require("util");
var credentials = {};
var storage = null;
var credentialsDef = {};
var redApp = null;
var querystring = require('querystring');
var Credentials;
function getCredDef(type) {
var dashedType = type.replace(/\s+/g, '-');
return credentialsDef[dashedType];
}
function isRegistered(type) {
return getCredDef(type) != undefined;
}
function restPOST(type) {
redApp.post('/credentials/' + type + '/:id', function (req, res) {
var body = "";
req.on('data', function (chunk) {
body += chunk;
});
req.on('end', function () {
var nodeType = type;
var nodeID = req.params.id;
var newCreds = querystring.parse(body);
var credentials = Credentials.get(nodeID) || {};
var definition = getCredDef(nodeType);
for (var cred in definition) {
if (newCreds[cred] == undefined) {
continue;
}
if (definition[cred].type == "password" && newCreds[cred] == '__PWRD__') {
continue;
}
if (newCreds[cred] == '') {
delete credentials[cred];
}
credentials[cred] = newCreds[cred];
}
Credentials.add(nodeID, credentials);
res.send(200);
});
});
}
function restGET(type) {
redApp.get('/credentials/' + type + '/:id', function (req, res) {
var nodeType = type;
var nodeID = req.params.id;
var credentials = Credentials.get(nodeID);
if (credentials == undefined) {
res.json({});
return;
}
var definition = getCredDef(nodeType);
var sendCredentials = {};
for (var cred in definition) {
if (definition[cred].type == "password") {
var key = 'has' + cred;
sendCredentials[key] = credentials[cred] != null && credentials[cred] != '';
continue;
}
sendCredentials[cred] = credentials[cred] || '';
}
res.json(sendCredentials);
});
}
function restDELETE(type) {
redApp.delete('/credentials/' + type + '/:id', function (req, res) {
var nodeID = req.params.id;
Credentials.delete(nodeID);
res.send(200);
});
}
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module.exports = {
init: function (_storage) {
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storage = _storage;
redApp = require("../server").app;
Credentials = this;
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},
load: function () {
return storage.getCredentials().then(function (creds) {
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credentials = creds;
}).otherwise(function (err) {
util.log("[red] Error loading credentials : " + err);
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});
},
add: function (id, creds) {
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credentials[id] = creds;
storage.saveCredentials(credentials);
},
get: function (id) {
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return credentials[id];
},
delete: function (id) {
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delete credentials[id];
storage.saveCredentials(credentials);
},
clean: function (getNode) {
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var deletedCredentials = false;
for (var c in credentials) {
var n = getNode(c);
if (!n) {
deletedCredentials = true;
delete credentials[c];
}
}
if (deletedCredentials) {
storage.saveCredentials(credentials);
}
},
register: function (type, definition) {
var dashedType = type.replace(/\s+/g, '-');
credentialsDef[dashedType] = definition;
restDELETE(dashedType);
restGET(dashedType);
restPOST(dashedType);
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}
}