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https://github.com/leberkleber/simple-jwt-provider


https://github.com/leberkleber/simple-jwt-provider

awesome-go go golang jwt lightweight postgres postgresql provider simple

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# simple-jwt-provider

Simple and lightweight JWT-Provider written in go (golang). It exhibits JWT for the in postgres or sqlite persisted user, which
can be managed via api. Also, a password-reset flow via mail verification is available. User specific custom-claims also
available for jwt-generation and mail rendering.

dockerized: https://hub.docker.com/r/leberkleber/simple-jwt-provider

build it yourself:

```shell script
# as docker-image
docker build . -t leberkleber/simple-jwt-provider

# as binary
go build -o simple-jwt-provider ./cmd/provider/
```

# Table of contents

- [Try it](#try-it)
- [Getting started](#getting-started)
- [Generate ECDSA-512 key pair](#generate-ecdsa-512-key-pair)
- [Configuration](#configuration)
- [API](#api)
- [POST `/v1/auth/login`](#post-v1authlogin)
- [POST `/v1/auth/refresh`](#post-v1authrefresh)
- [POST `/v1/auth/password-reset-request`](#post-v1authpassword-reset-request)
- [POST `/v1/auth/password-reset`](#post-v1authpassword-reset)
- [POST `/v1/admin/users`](#post-v1adminusers)
- [PUT `/v1/admin/users/{email}`](#put-v1adminusersemail)
- [DELETE `/v1/admin/users/{email}`](#delete-v1adminusersemail)
- [Mail](#mail)
- [Password reset request](#password-reset-request)
- [Development](#development)
- [mocks](#mocks)
- [component tests](#component-tests)

## Try it

```shell script
git clone [email protected]:leberKleber/simple-jwt-provider.git
docker-compose -f example/docker-compose.yml up

# create user via admin-api
./example/create-user.sh [email protected] password {}

# login with created user
./example/login.sh [email protected] password

# reset password
# 1) create password reset request
# - mail with reset token would be send
# 2) reset password with received token
# 3) do crud operations on user

# 1) create password reset request
./example/create-password-reset-request.sh [email protected]
# 1.1) open browser at http://127.0.0.1:8025/ and copy reset token (token only not the url)
# 2) reset password with received token
./example/reset-password.sh [email protected] newPassword {reset-token}
# verify new password
./example/login.sh [email protected] newPassword

# 3) do crud operations on user
# see ./example/*.sh
```

## Getting started

### Generate ECDSA-512 key pair

```sh
# private key
openssl ecparam -genkey -name secp521r1 -noout -out ecdsa-p521-private.pem
# public key
openssl ec -in ecdsa-p521-private.pem -pubout -out ecdsa-p521-public.pem
```

### Configuration

| Environment variable | Description | Required | Default |
| --------------------------------- |:-------------------------------------------------------------------------------------:| -----------------------------------:|----------------------:|
| SJP_LOG_LEVEL | Log-Level can be TRACE DEBUG INFO WARN ERROR FATAL or PANIC | no | INFO |
| SJP_SERVER_ADDRESS | Server-address network-interface to bind on e.g.: '127.0.0.1:8080' | no | 0.0.0.0:80 |
| SJP_JWT_LIFETIME | Lifetime of JWT | no | 4h |
| SJP_JWT_PRIVATE_KEY | JWT PrivateKey ECDSA512 | yes | - |
| SJP_JWT_AUDIENCE | Audience private claim which will be applied in each JWT | no | - |
| SJP_JWT_ISSUER | Issuer private claim which will be applied in each JWT | no | - |
| SJP_JWT_SUBJECT | Subject private claim which will be applied in each JWT | no | - |
| SJP_DATABASE_TYPE | Database type. Currently supported postgres and sqlite | yes | - |
| SJP_DATABASE_DSN | Data Source Name for persistence | yes | - |
| SJP_ADMIN_API_ENABLE | Enable admin API to manage stored users (true / false) | no | false |
| SJP_ADMIN_API_USERNAME | Basic Auth Username if enable-admin-api = true | yes, when enable-admin-api = true | - |
| SJP_ADMIN_API_PASSWORD | Basic Auth Password if enable-admin-api = true when is bcrypted prefix with 'bcrypt:' | yes, when enable-admin-api = true | - |
| SJP_MAIL_TEMPLATES_FOLDER_PATH | Path to mail-templates folder | no | /mail-templates |
| SJP_MAIL_SMTP_HOST | SMTP host to connect to | yes | - |
| SJP_MAIL_SMTP_PORT | SMTP port to connect to | no | 587 |
| SJP_MAIL_SMTP_USERNAME | SMTP username to authorize with | yes | - |
| SJP_MAIL_SMTP_PASSWORD | SMTP password to authorize with | yes | - |
| SJP_MAIL_TLS_INSECURE_SKIP_VERIFY | true if certificates should not be verified | no | false |
| SJP_MAIL_TLS_SERVER_NAME | name of the server who expose the certificate | no | - |

## API

### POST `/v1/auth/login`

This endpoint will check the email/password combination and will set the respond with an jwtauthToken if correct:

Request body:
```json
{
"email": "[email protected]",
"password": "s3cr3t"
}
```

Response body (200 - OK):
```json
{
"access_token": "",
"refresh_token": ""
}
```

### POST `/v1/auth/refresh`

This endpoint will return a new access and refresh token. The submitted refresh-token will no longer be valid.

Request body:
```json
{
"refresh_token": ""
}
```

Response body (200 - OK):
```json
{
"access_token": "",
"refresh_token": ""
}
```
### POST `/v1/auth/password-reset-request`

This endpoint will trigger a password reset request. The user gets a token per mail. With this token, the password can
be reset via POST@`/v1/auth/password-reset`.

Request body:
```json
{
"email": "[email protected]"
}
```

Response (201 - CREATED)

### POST `/v1/auth/password-reset`

This endpoint will reset the password of the given user if the reset-token is valid and matches to the given email.

Request body:
```json
{
"email": "[email protected]",
"reset_token": "rAnDoMsHiT456",
"password": "SeCReT"
}
```

Response (204 - NO CONTENT)

### POST `/v1/admin/users`

This endpoint will create a new user if admin api auth was successfully:

Request body:
```json
{
"email": "[email protected]",
"password": "s3cr3t",
"claims": {
"myCustomClaim": "custom claims for jwt and mail templates"
}
}
```

Response body (201 - CREATED)

### PUT `/v1/admin/users/{email}`

This endpoint will update the given properties (excluding email) of the user with the given email when the admin api
auth was successfully:

Request body:
```json
{
"password": "n3wS3cr3t",
"claims": {
"updatedClaim": "now updated"
}
}
```

Response body (200 - NO CONTENT)

```json
{
"email": "[email protected]",
"password": "**********",
"claims": {
"updatedClaim": "now updated"
}
}
```

### DELETE `/v1/admin/users/{email}`

This endpoint will delete the user with the given email when there are no tokens which referred to this user, and the
admin api auth was successfully:

Response body (201 - NO CONTENT)

## Mail

Mails will be generated based on a set of templates which should be prepared for productive usage.

- `.html` represents the html body of the mail and can be templated with `html.template` syntax
(https://golang.org/pkg/html/template/). Available templating arguments listed in detailed template type description.
- `.txt` represents the text body of the mail and can be templated with `text.template` syntax
(https://golang.org/pkg/text/template/). Available templating arguments listed in detailed template type description.
- `.yml` represents the header of the mail. In this template headers e.g. `From`, `To` or `Subject`
can be set `text.template` syntax (https://golang.org/pkg/text/template/). Available templating arguments listed in
detailed template type description.

### Password reset request

An example of this mail type can be found in `/mail-templates/password-reset-request.*`. Available template arguments:

| Argument | Content | Example usage |
|--------------------|--------------------------------------------------------|-------------------------------------|
| Recipient | Users email address | `{{.Recipient}}` |
| PasswordResetToken | The token which is required to reset the password | `{{.PasswordResetToken}}` |
| Claims | All custom-claims which stored in relation to the user | `{{if index .Claims "first_name"}}` |

## Development

### mocks

Mocks will be generated with github.com/matryer/moq. Execute the following for generation:

```shell script
go get github.com/matryer/moq
go generate ./...
```

### component tests

Component tests can be executed locally with:

```shell script
# build simple-jwt-provider from source code
# setup infrastructure
# run all test file with build-tag component in /cmd/provider
./component-tests.sh
```