react-native-azure-auth-encrypted
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Azure AD authentication in React Native using encrypted storage
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<h1 class="page-title">networking/index.js</h1>
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<pre class="prettyprint source linenums"><code>import url from 'url'
/**
* Helper function to serialize object into urlencoded form data string, properties
* which value is either `null` or `undefined` will be ignored.
* @param {Object} params Object which contains props.
* @return {string} Result form data string.
*/
function serializeParams(params) {
let paramStr = ''
for (let prop in params) {
if (params[prop] !== null && params[prop] !== void 0)
paramStr += `&${prop}=${encodeURIComponent(params[prop])}`
}
return paramStr
}
/**
* Helper to perform HTTP requests
* Blob (binary) content types are not supported
*
* Class variables:
* - baseUrl | authorityUrl: base URL the request path is added to
* - token: Auth token if the request needs authorization
*
* @export
* @class Client
*/
export default class Client {
constructor(options = {}) {
const {authorityUrl, baseUrl, token} = options
if (!(baseUrl || authorityUrl)) { throw new Error('Missing Azure authority base URL') }
const parsed = url.parse(baseUrl || authorityUrl)
this.baseUrl = parsed.protocol === 'https:' || parsed.protocol === 'http:' ? (baseUrl || authorityUrl) : `https://${(baseUrl || authorityUrl)}`
if (token) {
this.bearer = `Bearer ${token}`
}
}
post(path, body) {
let url = this.url(path)
return this.request('POST', url, body)
}
patch(path, body) {
return this.request('PATCH', this.url(path), body)
}
get(path, query) {
return this.request('GET', this.url(path, query))
}
url(path, query) {
let endpoint = url.resolve(this.baseUrl, path)
if (query && query.length !== 0) {
const parsed = url.parse(endpoint)
parsed.query = query || {}
endpoint = url.format(parsed)
}
return endpoint
}
/**
* Helper function to send HTTP requests
*
* @param {String} method
* @param {String} url
* @param {Object} [body] - request body
*/
async request(method, url, body) {
const options = {
method: method,
headers: {
'Accept': 'application/json, image/*;q=0.1', // image is needed for user phote requests
'Content-Type': 'application/x-www-form-urlencoded'
}
}
if (this.bearer) {
options.headers['Authorization'] = this.bearer
}
if (body) {
// POST
options.body = serializeParams(body)
options.headers['Content-Length'] = options.body.length
}
let response = await fetch(url, options)
const payload = { status: response.status, ok: response.ok, headers: response.headers }
if (response.headers.get('Content-Type') && response.headers.get('Content-Type').startsWith('image')) {
try {
const blob = await response.blob()
return { ...payload, blob }
} catch (err) {
return { ...payload, text: response.statusText }
}
} else {
try {
const json = await response.json()
return { ...payload, json }
} catch (error) {
try {
const text = await response.text()
return { ...payload, text }
} catch (err) {
return { ...payload, text: response.statusText }
}
}
}
}
}</code></pre>
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