<!DOCTYPE html>
<html>
<head>
<!-- Set the base href -->
<script>document.write('<base href="' + document.location + '" />');</script>
<title>Angular S3 Upload</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<!-- Polyfills -->
<script src="https://unpkg.com/core-js/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
<script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('main.js')
.catch(function(err){ console.error(err); });
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js"></script>
</head>
<body>
<app-root>loading...</app-root>
</body>
</html>
<!--
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
/* Styles go here */
/**
* WEB ANGULAR VERSION
* (based on systemjs.config.js in angular.io)
* System configuration for Angular samples
* Adjust as necessary for your application needs.
*/
(function (global) {
System.config({
// DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
transpiler: 'ts',
typescriptOptions: {
// Copy of compiler options in standard tsconfig.json
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"lib": ["es2015", "dom"],
"noImplicitAny": true,
"suppressImplicitAnyIndexErrors": true
},
meta: {
'typescript': {
"exports": "ts"
}
},
paths: {
// paths serve as alias
'npm:': 'https://unpkg.com/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/router/upgrade': 'npm:@angular/router/bundles/router-upgrade.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
'@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',
'@angular/upgrade/static': 'npm:@angular/upgrade/bundles/upgrade-static.umd.js',
// other libraries
'rxjs': 'npm:rxjs@5.0.1',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
'ts': 'npm:plugin-typescript@5.2.7/lib/plugin.js',
'typescript': 'npm:typescript@2.0.10/lib/typescript.js',
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './main.ts',
defaultExtension: 'ts'
},
rxjs: {
defaultExtension: 'js'
}
}
});
})(this);
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';
platformBrowserDynamic().bootstrapModule(AppModule);
/*
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
FormsModule,
HttpModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
import { Component } from '@angular/core';
import {Http} from "@angular/http";
declare var CryptoJS: any;
@Component({
selector: 'app-root',
template: `
<input type="text" [(ngModel)]="config.bucket" placeholder="The S3 Bucket"/><br/>
<input type="text" [(ngModel)]="config.accessKey" placeholder="Your Access Key"/><br/>
<input type="text" [(ngModel)]="config.secretAccessKey" placeholder="Your Secret Access Key"/><br/>
<input type="text" [(ngModel)]="config.region" placeholder="The Region of the Bucket"/><br/>
<input type="file" (change)="upload($event)"/><br/>
<img *ngIf="imagePath" [src]="imagePath">
`
})
export class AppComponent {
uploader: S3Uploader;
imagePath: string;
config = new S3Config();
constructor(private http: Http) {
this.uploader = new S3Uploader();
// Input your S3 Config
this.uploader.init(http, this.config);
}
upload(event) {
let file = event.srcElement.files[0];
this.uploader.upload(file).then((x) => {
this.imagePath = x;
});
}
}
export class S3Config {
bucket: string;
accessKey: string;
secretAccessKey: string;
region: string;
folder: string;
}
export class S3Uploader {
private config: S3Config;
private http: Http;
init(http: Http, config: S3Config) {
this.http = http;
this.config = config;
}
upload(file: any): Promise<any> {
let date = this.generateTimestamp();
let datetime = date + 'T000000Z';
let credential = `${this.config.accessKey}/${date}/${this.config.region}/s3/aws4_request`;
let policy = JSON.stringify({
"expiration": (new Date(Date.now() + 100000)).toISOString(),
"conditions": [
{"bucket": this.config.bucket},
["starts-with", "$key", ""],
{"acl": "public-read"},
["starts-with", "$Content-Type", ""],
{"x-amz-credential": credential},
{"x-amz-algorithm": "AWS4-HMAC-SHA256"},
{"x-amz-date": datetime}
]
});
let policyBase64 = window.btoa(policy);
let signatureKey = this.generateSignatureKey(this.config.secretAccessKey, date, this.config.region, "s3");
let signature = CryptoJS.HmacSHA256(policyBase64, signatureKey).toString(CryptoJS.enc.Hex);
let formData = new FormData();
formData.append('acl', "public-read");
formData.append('Content-Type', file.type);
formData.append('X-Amz-Date', datetime);
formData.append('X-Amz-Algorithm', "AWS4-HMAC-SHA256");
formData.append('X-Amz-Credential', credential);
formData.append('X-Amz-Signature', signature);
formData.append('Policy', policyBase64);
formData.append('key', file.name);
formData.append('file', file);
return new Promise((resolve, reject) => {
this.http.post(`https://${this.config.bucket}.s3.amazonaws.com/`, formData).subscribe(x => {
console.log(x);
resolve(x.headers.get("Location"));
}, x => {
console.error(x);
reject();
});
});
}
generateSignatureKey(key, dateStamp, regionName, serviceName) {
let kDate = CryptoJS.HmacSHA256(dateStamp, "AWS4" + key);
let kRegion = CryptoJS.HmacSHA256(regionName, kDate);
let kService = CryptoJS.HmacSHA256(serviceName, kRegion);
let kSigning = CryptoJS.HmacSHA256("aws4_request", kService);
return kSigning;
}
generateTimestamp() {
let date = new Date();
let year = date.getFullYear();
let month = ("0" + (date.getMonth() + 1)).slice(-2);
let day = ("0" + date.getDate()).slice(-2);
return year + month + day;
}
}
# An example of uploading files to S3 by Angular2
See the [tutorial](http://swarm-discourse.cloudapp.net/t/an-example-of-uploading-files-to-s3-by-angular2/36)