httpie-auth-plugin-for-oauth2-client-credentials 0.1.0

httpie auth plugin for OAuth2.0 client credentials flow.

httpie-auth-plugin-for-oauth2-client-credentials

As an auth plugin for httpie, it obtains a token with the OAuth2.0 client_credentials flow before executing http, and adds the Authorization: Bearer ${token} header to the executed request.

Token request patterns

Token request patterns are supported for the following:

Installation

pip install httpie-auth-plugin-for-oauth2-client-credentials

Usage

Since the format of the request to get the token depends on the support of the server, this module supports the following three patterns depending on the --token-request-type option.
The SCOPE parameter is optional in all patterns.

Basic authentication (default)

Set CLIENT_ID and CLIENT_SECRET to Basic authentication to get the token.
Since this pattern is the default, you can omit the --token-request-type option.

Execute command:

http --auth-type=oauth2-client-credentials \
     --auth="${CLIENT_ID}:${CLIENT_SECRET}" \
     --token-endpoint="${TOKEN_ENDPOINT_URL}" \
     --token-request-type="basic" \
     --scope="${SCOPE}" \
     ${TARGET_ENDPOINT_URL}

Token request:

POST ${TOKEN_ENDPOINT_URL} HTTP/1.1
Host: ${TOKEN_ENDPOINT_HOST}
Authorization: Basic ${CLIENT_ID:CLIENT_SECRET base64 strings}
Content-Type: application/x-www-form-urlencoded

grant_type=client_credentials
&scope=${SCOPE}

Form request (application/x-www-form-urlencoded)

Send CLIENT_ID and CLIENT_SECRET as part of the Form data.

Execute command:

http --auth-type=oauth2-client-credentials \
     --auth="${CLIENT_ID}:${CLIENT_SECRET}" \
     --token-endpoint="${TOKEN_ENDPOINT_URL}" \
     --token-request-type="form" \
     --scope="${SCOPE}" \
     ${TARGET_ENDPOINT_URL}

Token request:

POST ${TOKEN_ENDPOINT_URL} HTTP/1.1
Host: ${TOKEN_ENDPOINT_HOST}
Content-Type: application/x-www-form-urlencoded

client_id=${CLIENT_ID}
&client_secret=${CLIENT_SECRET}
&grant_type=client_credentials
&scope=${SCOPE}

JSON request (application/json)

Sends all request properties as JSON format.

Execute command:

http --auth-type=oauth2-client-credentials \
     --auth="${CLIENT_ID}:${CLIENT_SECRET}" \
     --token-endpoint="${TOKEN_ENDPOINT_URL}" \
     --token-request-type="json" \
     --scope="${SCOPE}" \
     ${TARGET_ENDPOINT_URL}

Token request:

POST ${TOKEN_ENDPOINT_URL} HTTP/1.1
Host: ${TOKEN_ENDPOINT_HOST}
Content-Type: application/json

{
    "client_id": "${client_id}",
    "client_secret": "${client_secret}",
    "grant_type": "client_credentials",
    "scope": "${SCOPE}"
}

Supported .netrc

Supported .netrc.
Please check the httpie documentation for usage instructions.

Important Notes before Use

The value for "machine" in the ".netrc" file is the TARGET_ENDPOINT host, not the TOKEN_ENDPOINT host. It should be TOKEN_ENDPOINT, but the main body of httpie is designed to extract authentication information from the TARGET_ENDPOINT host.

# Create(or add) .netrc file.
cat <<EOF>> ~/.netrc

machine   {TARGET_ENDPOINT_HOST}
login     {Your Client ID}
password  {Your Client Secret}
EOF

# Change permission.
chmod 600 ~/.netrc
# Example request.
http --auth-type=oauth2-client-credentials \
     --token-endpoint="${TOKEN_ENDPOINT_URL}" \
     --token-request-type="form" \
     --scope="${SCOPE}" \
     ${TARGET_ENDPOINT_URL}

Options

• --print-token-response
  Output the token acquisition response to the console

Note

Token response

The token response must be JSON in the following format.
The format to be given to the Authorization header of the target endpoint is ${token_type} ${access_token}.
If token_type is not included in the response, the default value of the Prefix is Bearer.

{
  "token_type": "Bearer",
  "access_token": "xxxxxxxxxxxx",
  "expires_in": 3599
}

Caution

This plugin does not have a function to cache the token until "expires_in", so it will send a token request every time you execute the http command.