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:

# 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
• Getting started
  • Generate ECDSA-512 key pair
  • Configuration
• API
  • POST /v1/auth/login
  • POST /v1/auth/refresh
  • POST /v1/auth/password-reset-request
  • POST /v1/auth/password-reset
  • POST /v1/admin/users
  • PUT /v1/admin/users/{email}
  • DELETE /v1/admin/users/{email}
• Mail
  • Password reset request
• Development
  • mocks
  • component tests

Try it

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

# 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:

{
  "email": "[email protected]",
  "password": "s3cr3t"
}

Response body (200 - OK):

{
  "access_token": "<access-jwt>",
  "refresh_token": "<refresh-jwt>"
}

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:

{
  "refresh_token": "<refresh_jwt>"
}

Response body (200 - OK):

{
  "access_token": "<new-access-jwt>",
  "refresh_token": "<new-refresh-jwt>"
}

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:

{
  "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:

{
  "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:

{
  "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:

{
  "password": "n3wS3cr3t",
  "claims": {
    "updatedClaim": "now updated"
  }
}

Response body (200 - NO CONTENT)

{
  "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.

• <mailType>.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.
• <mailType>.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.
• <mailType>.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:

go get github.com/matryer/moq
go generate ./...

component tests

Component tests can be executed locally with:

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