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openidconnect-signin.js
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openidconnect-signin.js
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/**
@license
Copyright (c) 2018 Advanced Community Information Systems (ACIS) Group, Chair of Computer Science 5 (Databases &
Information Systems), RWTH Aachen University, Germany. All rights reserved.
*/
import {LitElement, html} from 'lit-element';
import {openidconnectIcon, signOutIcon} from './openidconnect-icons.js';
import 'oidc-client';
/**
* `<openidconnect-signin>` is used to authenticate with an OpenID Connect provider, allowing you to interact
* with OpenID APIs.
* Upon successful login a [signed-in](/#/elements/OpenIDConnectSignin#method-_handleSignedIn) event is dispatched with a oidc-user-object as the `event.detail`.
* The content of this object is displayed as part of the [demo](/#/elements/openidconnect-signin/demos/demo/index.html) after a successful login and can be retrieved via the protected [_user-property](/#/elements/openidconnect-signin#property-_user).
* The `profile.sub` attribute can be used to identify a user and the `access_token` can be passed as `Bearer` token within the `Authorization` header to authenticate a user against the [learning-layers API](https://api.learning-layers.eu/o/oauth2/).
* Upon logout a [signed-out](/#/elements/OpenIDConnectSignin#method-_handleSignedIn) event is dispatched.
* The element also has the protected [_signedIn-property](/#/elements/openidconnect-signin#property-_signedIn) indicating whether a user is logged in.
*
* @customElement
* @polymer
* @demo demo/index.html
*
*/
class OpenIDConnectSignin extends LitElement {
static get properties() {
return {
authority: {
type: String
},
clientId: {
type: String
},
/**
* Mandatory attribute. The resource this points to only has to import the `<openidconnect-popup-signin-callback>`
* or `<openidconnect-redirect-signin-callback>` depending on whether redirect is used or not.
* See [repo](https://github.com/rwth-acis/openidconnect-signin/blob/master/demo/popup-signin-callback.html) for an example.
*/
popupRedirectUri: {
type: String
},
/**
* Mandatory attribute. The resource this points to only has to import the `<openidconnect-popup-signout-callback>`.
* See [repo](https://github.com/rwth-acis/openidconnect-signin/blob/master/demo/popup-signout-callback.html) for an example.
*/
popupPostLogoutRedirectUri: {
type: String
},
providerName: {
type: String
},
scope: {
type: String
},
/**
* Mandatory attribute. The resource this points to only has to import the `<openidconnect-signin-silent-callback>`.
* See [repo](https://github.com/rwth-acis/openidconnect-signin/blob/master/demo/silent-callback.html) for an example.
*/
silentRedirectUri: {
type: String
},
/**
* If set, the login procedure works via a redirect to the learning-layers api.
* In that case you have to import the `<openidconnect-redirect-signin-callback>`
* element in the resource `popupRedirectUri` points to (instead of `<openidconnect-popup-signin-callback>`).
* See [redirect-signin-callback](https://github.com/rwth-acis/openidconnect-signin/blob/master/demo/redirect-signin-callback.html)
* for an example.
*/
useRedirect: {
type: Boolean
},
/**
* If set, the login uses the `Authorization Code Flow` instead of the `Implicit Flow`.
* This enables to request `refresh tokens`, that can be used to refresh your access token.
*/
useCodeFlow: {
type: Boolean
},
_signedIn: {
type: Boolean
},
_user: {
type: Object
}
};
}
constructor() {
super();
this._signedIn = false;
this.useRedirect = false;
this.useCodeFlow = false;
}
render() {
return html`
<style>
:host {
display: inline-block;
}
.button {
/* Styles (c) https://developers.google.com/identity/sign-in/web/sign-in */
min-width: 120px;
height: 36px;
-webkit-border-radius: 1px;
border-radius: 1px;
-webkit-box-shadow: 0 2px 4px 0px rgba(0,0,0,.25);
box-shadow: 0 2px 4px 0 rgba(0,0,0,.25);
-webkit-box-sizing: border-box;
box-sizing: border-box;
-webkit-transition: background-color .218s,border-color .218s,box-shadow .218s;
transition: background-color .218s,border-color .218s,box-shadow .218s;
-webkit-user-select: none;
-webkit-appearance: none;
background-color: #fff;
background-image: none;
color: #262626;
cursor: pointer;
outline: none;
overflow: hidden;
position: relative;
text-align: center;
vertical-align: middle;
white-space: nowrap;
}
.button:hover {
-webkit-box-shadow: 0 0 3px 3px rgba(66,133,244,.3);
box-shadow: 0 0 3px 3px rgba(66,133,244,.3);
}
.icon {
padding: 8px;
width: 18px;
height: 18px;
float: left;
}
.label {
font-family: Roboto;
font-size: 13px;
line-height: 34px;
margin-right: 8px;
}
</style>
<div class="button"
@click=${this._handleClick}>
${this._signedIn ? html`
<div class="icon">
${signOutIcon}
</div>
<span class="label">
Sign out${this.providerName ? html` from ${this.providerName}` : ''}
</span>
` : html`
<div class="icon">
${openidconnectIcon}
</div>
<span class="label">
Sign in${this.providerName ? html` using ${this.providerName}` : ''}
</span>
`}
</div>
`;
}
updated(changedProperties) {
const settings = {
authority: this.authority,
client_id: this.clientId,
redirect_uri: this._pathToUri(this.popupRedirectUri),
post_logout_redirect_uri: this._pathToUri(this.popupPostLogoutRedirectUri),
response_type: (this.useCodeFlow ? 'code' : 'id_token token'),
response_mode: (this.useCodeFlow ? 'fragment' : null ),
scope: this.scope,
popup_redirect_uri: this._pathToUri(this.popupRedirectUri),
popup_post_logout_redirect_uri: this._pathToUri(this.popupPostLogoutRedirectUri),
silent_redirect_uri: this._pathToUri(this.silentRedirectUri),
automaticSilentRenew: true,
//silentRequestTimeout: 10000,
filterProtocolClaims: true,
loadUserInfo: true
};
this._manager = new UserManager(settings);
this._manager.events.addUserLoaded(user => {
this._user = user;
this._handleSignedIn();
});
this._manager.events.addUserUnloaded(user => {
this._user = undefined;
this._handleSignedOut();
});
this._manager.events.addSilentRenewError(function (error) {
console.error('error while renewing the access token', error);
});
if(!this._signedIn){
// try silent login
this._manager.signinSilent().catch(err => {
});
}
}
/**
* Completes a path to a full URI by using protocol, host and port of the current request.
*
* If path is "/my/path" and the current request is targeted at "https://example.com/app/",
* then this function returns "https://example.com/my/path".
* If in above example the path is "my/path/", then this function returns "https://example.com/app/my/path".
*
* @param path A path like "/my/path" or "my/path".
* @private
*/
_pathToUri(path){
path = path.trim();
if(path.startsWith('http')){
return path;
}
if(path.startsWith('/')){
// the path is absolute and we need to append it after the origin part of the current location
return window.location.origin + path;
}else{
// the path is relative and we need to append it to the current path without the part after the last slash
return window.location.href.substr(0, window.location.href.lastIndexOf('/') + 1) + path;
}
}
_handleClick(e) {
if (this._signedIn) {
const errorHandler = () => {
// could not log out, at least clear state
this._manager.clearStaleState();
this._manager.removeUser();
};
if (this.useRedirect) {
this._manager.signoutRedirect({state:window.location.href}).catch(errorHandler);
} else {
this._manager.signoutPopup().catch(errorHandler);
}
} else {
if (this.useRedirect) {
this._manager.signinRedirect({state:window.location.href});
} else {
this._manager.signinPopup();
}
}
}
_handleSignedIn() {
this._signedIn = true;
this.dispatchEvent(new CustomEvent('signed-in', {bubbles: true, detail: this._user}));
}
_handleSignedOut() {
this._signedIn = false;
this.dispatchEvent(new CustomEvent('signed-out', {bubbles: true}));
}
}
customElements.define('openidconnect-signin', OpenIDConnectSignin);