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Signed-off-by: Michael Marcenich <[email protected]>
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mentAl-maZe committed May 2, 2020
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13 changes: 13 additions & 0 deletions .editorconfig
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# editorconfig.org
root = true

[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[*.md]
trim_trailing_whitespace = false
27 changes: 27 additions & 0 deletions .eslintrc.json
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{
"env": {
"browser": true,
"es6": true
},
"extends": [
"eslint:recommended",
"plugin:@typescript-eslint/eslint-recommended",
"plugin:@typescript-eslint/recommended",
"plugin:prettier/recommended",
"prettier/@typescript-eslint"
],
"globals": {
"Atomics": "readonly",
"SharedArrayBuffer": "readonly"
},
"parser": "@typescript-eslint/parser",
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module"
},
"plugins": [
"@typescript-eslint",
"prettier"
],
"rules": {}
}
118 changes: 118 additions & 0 deletions .gitignore
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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
lerna-debug.log*

# Diagnostic reports (https://nodejs.org/api/report.html)
report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

# Runtime data
pids
*.pid
*.seed
*.pid.lock

# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov

# Coverage directory used by tools like istanbul
coverage
*.lcov

# nyc test coverage
.nyc_output

# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
.grunt

# Bower dependency directory (https://bower.io/)
bower_components

# node-waf configuration
.lock-wscript

# Compiled binary addons (https://nodejs.org/api/addons.html)
build/Release

# Dependency directories
node_modules/
jspm_packages/

# Snowpack dependency directory (https://snowpack.dev/)
web_modules/

# TypeScript cache
*.tsbuildinfo

# Optional npm cache directory
.npm

# Optional eslint cache
.eslintcache

# Microbundle cache
.rpt2_cache/
.rts2_cache_cjs/
.rts2_cache_es/
.rts2_cache_umd/

# Optional REPL history
.node_repl_history

# Output of 'npm pack'
*.tgz

# Yarn Integrity file
.yarn-integrity

# dotenv environment variables file
.env
.env.test

# parcel-bundler cache (https://parceljs.org/)
.cache
.parcel-cache

# Next.js build output
.next
out

# Nuxt.js build / generate output
.nuxt
dist

# Gatsby files
.cache/
# Comment in the public line in if your project uses Gatsby and not Next.js
# https://nextjs.org/blog/next-9-1#public-directory-support
# public

# vuepress build output
.vuepress/dist

# Serverless directories
.serverless/

# FuseBox cache
.fusebox/

# DynamoDB Local files
.dynamodb/

# TernJS port file
.tern-port

# Stores VSCode versions used for testing VSCode extensions
.vscode-test

# yarn v2

.yarn/cache
.yarn/unplugged
.yarn/build-state.yml
.pnp.*

/lib
5 changes: 5 additions & 0 deletions .prettierrc
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{
"semi": false,
"arrowParens": "avoid",
"singleQuote": true
}
21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2020 Michael Marcenich

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
141 changes: 141 additions & 0 deletions README.md
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# Workbox plugin for firebase auth

This is a simple plugin for workbox strategies which adds an `Authorization: Bearer` header with the return value from [`firebase.User.getIdToken(true)`](https://firebase.google.com/docs/reference/js/firebase.User#getidtoken) to the [Request](https://developer.mozilla.org/en-US/docs/Web/API/Request) if a firebase User is authenticated (i.e. [`firebase.auth.Auth.onAuthStateChanged()`](https://firebase.google.com/docs/reference/js/firebase.auth.Auth#onauthstatechanged) returns a [`firebase.User`](https://firebase.google.com/docs/reference/js/firebase.User)).

This way you are able to cache authorized routes without relying on a session cookie or an API token.

## Usage

### Module

Use the module if:

- you are building your service worker [using a bundler](https://developers.google.com/web/tools/workbox/guides/using-bundlers).
- you are generating your service worker with [workbox-build](https://developers.google.com/web/tools/workbox/modules/workbox-build)

1. Add the dependency:

```sh
npm i workbox-firebase-auth // or yarn add workbox-firebase-auth
```

2. Import the plugin and use it for your strategies

Example:

```js
import {registerRoute} from 'workbox-routing/registerRoute.mjs';
import {NetworkFirst} from 'workbox-strategies/NetworkFirst.mjs';
import FirebaseAuthPlugin from 'workbox-plugin-firebase-auth';

registerRoute(
/\.(?:png|gif|jpg|jpeg|svg)$/,
new NetworkFirst({
cacheName: 'authorizedApi',
plugins: [
new FirebaseAuthPlugin({
firebase: {
config: { /* your firebase config */ }
}
}),
],
}),
);
```

### CDN

If you are using [workbox-sw](https://developers.google.com/web/tools/workbox/modules/workbox-sw) to import workbox, you can use the [unpkg CDN](https://unpkg.com/) to import the plugin.
It will then be available under the global variable `WorkboxPluginFirebaseAuth`.

Example:

```js
importScripts(
'https://storage.googleapis.com/workbox-cdn/releases/5.1.2/workbox-sw.js',
'https://unpkg.com/workbox-plugin-firebase-auth'
)

workbox.routing.registerRoute(
/\.(?:png|gif|jpg|jpeg|svg)$/,
new workbox.strategies.CacheFirst({
cacheName: 'authorizedApi',
plugins: [
new WorkboxPluginFirebaseAuth({
firebase: {
config: { /* your firebase config */ }
}
}),
],
}),
)
```

## Options

If your service worker is served from firebase hosting, associated with the firebase app you use to authorize users, you can omit configuration altogether.
Otherwise the [`firebase.config`](#firebaseconfig) parameter is **REQUIRED**.

### firebase

This key is used to configure the firebase instance.

#### firebase.config

**Required:** If your service worker is NOT served from firebase hosting or if you use a different app to authorize users.
**Type:** `object`

The [firebase config object](https://firebase.google.com/docs/web/setup?authuser=0#config-object) from the app that you use to authorize your users.

#### firebase.version

**Type:** `string`
**Default:** `7.14.2`

This key can be used to specify the firebase version to use.

> **Note:** This is currently a hard coded fallback and will manually be updated.
> In the future this should use the version form the dependency used for development.
> Sadly I haven't figured out how to achieve this yet (PRs welcome :sweat_smile:)
### awaitResponse

**Type:** `boolean`
**Default:** `false`

If true the plugin will await the fetch to go through and check if the response has a 401 status before attaching the authorization and resending the request.
Be aware that this happens before the response is passed to the caching strategy, please plan accordingly (e.g. a cache first strategy might serve authorized content to non authorized users).

> **Note:** Please make sure your server responds to unauthorized requests with a 401 status code, so that the plugin can correctly identify authorization failures.
### constraints

This key can be used to specify additional constraints on top of the route matcher.

#### constraints.types

**Type:** `string | string[]`
**Default:** `['*']`

This can be used to authorize only requests that accept certain types of responses (e.g. `application/json`)

> **Note:** This simply matches the entries from the `Accept` request header against the passed array/string.
> As of yet group matching is not supported (e.g. `text/*` will not match `text/html`)
#### constraints.https

**Type:** `boolean`
**Default:** `false`

Only allow requests from secure origins (`https://` or `localhost`) to be authorized.

#### constraints.ignorePaths

**Type:** `(string | RegExp)[]`
**Default:** `[]`

Paths to ignore when authorizing requests.

> **Note:** Checks against the pathname of the request (e.g. `/api/some-resource`)
> If the argument is a `string` a request will be ignored if the pathname starts with that `string`.
> If the argument is a `RegExp` the leading `'/'` will be stripped from the pathname and it will be checked against the `RegExp`.
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