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# Vx.x.x (Pre-release)
## Changes since v2.2:
- Repository forked on 27/11/18
- README updated to include note that this repository is forked
- CHANGLOG created to track changes to repository from original fork

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oauth2_proxy # oauth2_proxy
=================
A reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others) A reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others)
to validate accounts by email, domain or group. to validate accounts by email, domain or group.
[![Build Status](https://secure.travis-ci.org/bitly/oauth2_proxy.svg?branch=master)](http://travis-ci.org/bitly/oauth2_proxy) **Note:** This repository was forked from [Bitly/OAuth2_Proxy](https://github.com/bitly/oauth2_proxy) on 27/11/2018.
Versions v3.0.0 and up are from this fork and will have diverged from any changes in the original fork.
A list of changes can be seen in the [CHANGELOG](CHANGELOG.md).
[![Build Status](https://secure.travis-ci.org/bitly/oauth2_proxy.svg?branch=master)](http://travis-ci.org/bitly/oauth2_proxy)
![Sign In Page](https://cloud.githubusercontent.com/assets/45028/4970624/7feb7dd8-6886-11e4-93e0-c9904af44ea8.png) ![Sign In Page](https://cloud.githubusercontent.com/assets/45028/4970624/7feb7dd8-6886-11e4-93e0-c9904af44ea8.png)
@ -17,10 +19,12 @@ to validate accounts by email, domain or group.
1. Download [Prebuilt Binary](https://github.com/bitly/oauth2_proxy/releases) (current release is `v2.2`) or build with `$ go get github.com/bitly/oauth2_proxy` which will put the binary in `$GOROOT/bin` 1. Download [Prebuilt Binary](https://github.com/bitly/oauth2_proxy/releases) (current release is `v2.2`) or build with `$ go get github.com/bitly/oauth2_proxy` which will put the binary in `$GOROOT/bin`
Prebuilt binaries can be validated by extracting the file and verifying it against the `sha256sum.txt` checksum file provided for each release starting with version `v2.3`. Prebuilt binaries can be validated by extracting the file and verifying it against the `sha256sum.txt` checksum file provided for each release starting with version `v2.3`.
``` ```
sha256sum -c sha256sum.txt 2>&1 | grep OK sha256sum -c sha256sum.txt 2>&1 | grep OK
oauth2_proxy-2.3.linux-amd64: OK oauth2_proxy-2.3.linux-amd64: OK
``` ```
2. Select a Provider and Register an OAuth Application with a Provider 2. Select a Provider and Register an OAuth Application with a Provider
3. Configure OAuth2 Proxy using config file, command line options, or environment variables 3. Configure OAuth2 Proxy using config file, command line options, or environment variables
4. Configure SSL or Deploy behind a SSL endpoint (example provided for Nginx) 4. Configure SSL or Deploy behind a SSL endpoint (example provided for Nginx)
@ -31,12 +35,12 @@ You will need to register an OAuth application with a Provider (Google, GitHub o
Valid providers are : Valid providers are :
* [Google](#google-auth-provider) *default* - [Google](#google-auth-provider) _default_
* [Azure](#azure-auth-provider) - [Azure](#azure-auth-provider)
* [Facebook](#facebook-auth-provider) - [Facebook](#facebook-auth-provider)
* [GitHub](#github-auth-provider) - [GitHub](#github-auth-provider)
* [GitLab](#gitlab-auth-provider) - [GitLab](#gitlab-auth-provider)
* [LinkedIn](#linkedin-auth-provider) - [LinkedIn](#linkedin-auth-provider)
The provider can be selected using the `provider` configuration value. The provider can be selected using the `provider` configuration value.
@ -50,14 +54,14 @@ For Google, the registration steps are:
4. In the left Nav pane, choose **"Credentials"** 4. In the left Nav pane, choose **"Credentials"**
5. In the center pane, choose **"OAuth consent screen"** tab. Fill in **"Product name shown to users"** and hit save. 5. In the center pane, choose **"OAuth consent screen"** tab. Fill in **"Product name shown to users"** and hit save.
6. In the center pane, choose **"Credentials"** tab. 6. In the center pane, choose **"Credentials"** tab.
* Open the **"New credentials"** drop down - Open the **"New credentials"** drop down
* Choose **"OAuth client ID"** - Choose **"OAuth client ID"**
* Choose **"Web application"** - Choose **"Web application"**
* Application name is freeform, choose something appropriate - Application name is freeform, choose something appropriate
* Authorized JavaScript origins is your domain ex: `https://internal.yourcompany.com` - Authorized JavaScript origins is your domain ex: `https://internal.yourcompany.com`
* Authorized redirect URIs is the location of oauth2/callback ex: `https://internal.yourcompany.com/oauth2/callback` - Authorized redirect URIs is the location of oauth2/callback ex: `https://internal.yourcompany.com/oauth2/callback`
* Choose **"Create"** - Choose **"Create"**
4. Take note of the **Client ID** and **Client Secret** 7. Take note of the **Client ID** and **Client Secret**
It's recommended to refresh sessions on a short interval (1h) with `cookie-refresh` setting which validates that the account is still authorized. It's recommended to refresh sessions on a short interval (1h) with `cookie-refresh` setting which validates that the account is still authorized.
@ -68,15 +72,17 @@ It's recommended to refresh sessions on a short interval (1h) with `cookie-refre
3. Under "APIs & Auth", choose APIs. 3. Under "APIs & Auth", choose APIs.
4. Click on Admin SDK and then Enable API. 4. Click on Admin SDK and then Enable API.
5. Follow the steps on https://developers.google.com/admin-sdk/directory/v1/guides/delegation#delegate_domain-wide_authority_to_your_service_account and give the client id from step 2 the following oauth scopes: 5. Follow the steps on https://developers.google.com/admin-sdk/directory/v1/guides/delegation#delegate_domain-wide_authority_to_your_service_account and give the client id from step 2 the following oauth scopes:
``` ```
https://www.googleapis.com/auth/admin.directory.group.readonly https://www.googleapis.com/auth/admin.directory.group.readonly
https://www.googleapis.com/auth/admin.directory.user.readonly https://www.googleapis.com/auth/admin.directory.user.readonly
``` ```
6. Follow the steps on https://support.google.com/a/answer/60757 to enable Admin API access. 6. Follow the steps on https://support.google.com/a/answer/60757 to enable Admin API access.
7. Create or choose an existing administrative email address on the Gmail domain to assign to the ```google-admin-email``` flag. This email will be impersonated by this client to make calls to the Admin SDK. See the note on the link from step 5 for the reason why. 7. Create or choose an existing administrative email address on the Gmail domain to assign to the `google-admin-email` flag. This email will be impersonated by this client to make calls to the Admin SDK. See the note on the link from step 5 for the reason why.
8. Create or choose an existing email group and set that email to the ```google-group``` flag. You can pass multiple instances of this flag with different groups 8. Create or choose an existing email group and set that email to the `google-group` flag. You can pass multiple instances of this flag with different groups
and the user will be checked against all the provided groups. and the user will be checked against all the provided groups.
9. Lock down the permissions on the json file downloaded from step 1 so only oauth2_proxy is able to read the file and set the path to the file in the ```google-service-account-json``` flag. 9. Lock down the permissions on the json file downloaded from step 1 so only oauth2_proxy is able to read the file and set the path to the file in the `google-service-account-json` flag.
10. Restart oauth2_proxy. 10. Restart oauth2_proxy.
Note: The user is checked against the group members list on initial authentication and every time the token is refreshed ( about once an hour ). Note: The user is checked against the group members list on initial authentication and every time the token is refreshed ( about once an hour ).
@ -89,7 +95,6 @@ Note: The user is checked against the group members list on initial authenticati
The Azure AD auth provider uses `openid` as it default scope. It uses `https://graph.windows.net` as a default protected resource. It call to `https://graph.windows.net/me` to get the email address of the user that logs in. The Azure AD auth provider uses `openid` as it default scope. It uses `https://graph.windows.net` as a default protected resource. It call to `https://graph.windows.net/me` to get the email address of the user that logs in.
### Facebook Auth Provider ### Facebook Auth Provider
1. Create a new FB App from <https://developers.facebook.com/> 1. Create a new FB App from <https://developers.facebook.com/>
@ -121,15 +126,14 @@ If you are using self-hosted GitLab, make sure you set the following to the appr
-redeem-url="<your gitlab url>/oauth/token" -redeem-url="<your gitlab url>/oauth/token"
-validate-url="<your gitlab url>/api/v4/user" -validate-url="<your gitlab url>/api/v4/user"
### LinkedIn Auth Provider ### LinkedIn Auth Provider
For LinkedIn, the registration steps are: For LinkedIn, the registration steps are:
1. Create a new project: https://www.linkedin.com/secure/developer 1. Create a new project: https://www.linkedin.com/secure/developer
2. In the OAuth User Agreement section: 2. In the OAuth User Agreement section:
* In default scope, select r_basicprofile and r_emailaddress. - In default scope, select r_basicprofile and r_emailaddress.
* In "OAuth 2.0 Redirect URLs", enter `https://internal.yourcompany.com/oauth2/callback` - In "OAuth 2.0 Redirect URLs", enter `https://internal.yourcompany.com/oauth2/callback`
3. Fill in the remaining required fields and Save. 3. Fill in the remaining required fields and Save.
4. Take note of the **Consumer Key / API Key** and **Consumer Secret / Secret Key** 4. Take note of the **Consumer Key / API Key** and **Consumer Secret / Secret Key**
@ -253,7 +257,7 @@ The following environment variables can be used in place of the corresponding co
There are two recommended configurations. There are two recommended configurations.
1) Configure SSL Termination with OAuth2 Proxy by providing a `--tls-cert=/path/to/cert.pem` and `--tls-key=/path/to/cert.key`. 1. Configure SSL Termination with OAuth2 Proxy by providing a `--tls-cert=/path/to/cert.pem` and `--tls-key=/path/to/cert.key`.
The command line to run `oauth2_proxy` in this configuration would look like this: The command line to run `oauth2_proxy` in this configuration would look like this:
@ -270,8 +274,7 @@ The command line to run `oauth2_proxy` in this configuration would look like thi
--client-secret=... --client-secret=...
``` ```
2. Configure SSL Termination with [Nginx](http://nginx.org/) (example config below), Amazon ELB, Google Cloud Platform Load Balancing, or ....
2) Configure SSL Termination with [Nginx](http://nginx.org/) (example config below), Amazon ELB, Google Cloud Platform Load Balancing, or ....
Because `oauth2_proxy` listens on `127.0.0.1:4180` by default, to listen on all interfaces (needed when using an Because `oauth2_proxy` listens on `127.0.0.1:4180` by default, to listen on all interfaces (needed when using an
external load balancer like Amazon ELB or Google Platform Load Balancing) use `--http-address="0.0.0.0:4180"` or external load balancer like Amazon ELB or Google Platform Load Balancing) use `--http-address="0.0.0.0:4180"` or
@ -321,12 +324,12 @@ The command line to run `oauth2_proxy` in this configuration would look like thi
OAuth2 Proxy responds directly to the following endpoints. All other endpoints will be proxied upstream when authenticated. The `/oauth2` prefix can be changed with the `--proxy-prefix` config variable. OAuth2 Proxy responds directly to the following endpoints. All other endpoints will be proxied upstream when authenticated. The `/oauth2` prefix can be changed with the `--proxy-prefix` config variable.
* /robots.txt - returns a 200 OK response that disallows all User-agents from all paths; see [robotstxt.org](http://www.robotstxt.org/) for more info - /robots.txt - returns a 200 OK response that disallows all User-agents from all paths; see [robotstxt.org](http://www.robotstxt.org/) for more info
* /ping - returns an 200 OK response - /ping - returns an 200 OK response
* /oauth2/sign_in - the login page, which also doubles as a sign out page (it clears cookies) - /oauth2/sign_in - the login page, which also doubles as a sign out page (it clears cookies)
* /oauth2/start - a URL that will redirect to start the OAuth cycle - /oauth2/start - a URL that will redirect to start the OAuth cycle
* /oauth2/callback - the URL used at the end of the OAuth cycle. The oauth app will be configured with this as the callback url. - /oauth2/callback - the URL used at the end of the OAuth cycle. The oauth app will be configured with this as the callback url.
* /oauth2/auth - only returns a 202 Accepted response or a 401 Unauthorized response; for use with the [Nginx `auth_request` directive](#nginx-auth-request) - /oauth2/auth - only returns a 202 Accepted response or a 401 Unauthorized response; for use with the [Nginx `auth_request` directive](#nginx-auth-request)
## Request signatures ## Request signatures
@ -341,9 +344,9 @@ in `oauthproxy.go`](./oauthproxy.go).
For more information about HMAC request signature validation, read the For more information about HMAC request signature validation, read the
following: following:
* [Amazon Web Services: Signing and Authenticating REST - [Amazon Web Services: Signing and Authenticating REST
Requests](https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html) Requests](https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html)
* [rc3.org: Using HMAC to authenticate Web service - [rc3.org: Using HMAC to authenticate Web service
requests](http://rc3.org/2011/12/02/using-hmac-to-authenticate-web-service-requests/) requests](http://rc3.org/2011/12/02/using-hmac-to-authenticate-web-service-requests/)
## Logging Format ## Logging Format