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CA handler for Insta

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grindsa edited this page Jun 27, 2025 · 3 revisions

Connecting to Insta ActiveCMS

Prerequisites

  • ActiveCMS needs to have the Active Security API activated.
  • You need to have a user, password, and an API key to access the ASA.
  • You need to have permissions to revoke and enroll certificates.

Configuration

Modify the server configuration (/acme_srv/acme_srv.cfg) and add the following parameters:

[CAhandler]
handler_file: examples/ca_handler/asa_ca_handler.py
api_host: http://<ip>:<port>
api_user: <user>
api_password: <password>
api_key: <api_key>
ca_bundle: <value>
ca_name: <ca_name>
profile_name: <value>
cert_validity_days: <days>

Parameter Descriptions

  • api_host - URL of the Active Security API.
  • api_user - REST user.
  • api_user_variable - Optional - Name of the environment variable containing the REST username (a configured api_user parameter in acme_srv.cfg takes precedence).
  • api_password - Password for the REST user.
  • api_password_variable - Optional - Name of the environment variable containing the password for the REST user (a configured api_password parameter in acme_srv.cfg takes precedence).
  • api_key - Key for the REST user.
  • api_key_variable - Optional - Name of the environment variable containing the API key for REST access (a configured api_key parameter in acme_srv.cfg takes precedence).
  • ca_bundle - Certificate bundle needed to validate the server certificate. Can be True/False or a filename (default: None).
  • ca_name - Name of the CA used to enroll certificates.
  • profile_name - Profile name.
  • cert_validity_days - Optional - Polling timeout (default: 60s).
  • eab_profiling - Optional - Activate EAB profiling (default: False).
  • enrollment_config_log - Optional - Log enrollment parameters (default: False).
  • enrollment_config_log_skip_list - Optional - List of enrollment parameters not to be logged, in JSON format. Example: ["parameter1", "parameter2"] (default: []).
  • allowed_domainlist - Optional - List of domain names allowed for enrollment, in JSON format. Example: ["bar.local$", "bar.foo.local"] (default: []).

Increase Enrollment Timeout

It is recommended to increase the enrollment timeout to prevent acme2certifier from closing the connection too early.

[Certificate]
enrollment_timeout: 15

Retrieving CA and Profile Information

You can retrieve the list of certificate authorities by running the following REST call against ASA:

root@rlh:~# curl -u "$api_user":"$api_password" -H "x-api-key: <api_key>" $api_host'/list_issuers'

You can retrieve the list of profiles by running the following REST call against ASA (the ca_name parameter must be URL-encoded):

root@rlh:~# curl -u "$api_user":"$api_password" -H "x-api-key: <api_key>" $api_host'/list_profiles?issuerName=<ca_name>'

The CA handler will verify the ca_name and profile_name parameters before enrollment.

Passing a Profile ID from Client to Server

acme2certifier supports the the Automated Certificate Management Environment (ACME) Profiles Extension draft allowing an acme-client to specify a profile_name parameter to be submitted to the CA server.

The list of supported profiles must be configured in acme_srv.cfg

[Order]
profiles: {"profile1": "http://foo.bar/profile1", "profile2": "http://foo.bar/profile2", "profile3": "http://foo.bar/profile3"}

Once enabled, a client can specify the profile_name to be used as part of an order request. Below an example for lego:

docker run -i -v $PWD/lego:/.lego/ --rm --name lego goacme/lego -s http://<acme-srv> -a --email "[email protected]" -d <fqdn> --http run --profile profile2

Further, this handler makes use of the header_info_list feature, allowing an ACME client to specify a profile_name to be used during certificate enrollment. This feature is disabled by default and must be activated in acme_srv.cfg as shown below:

[Order]
...
header_info_list: ["HTTP_USER_AGENT"]

The ACME client can then specify the profile_name as part of its user-agent string.

Example for acme.sh

docker exec -i acme-sh acme.sh --server http://<acme-srv> --issue -d <fqdn> --standalone --useragent profile_name=<profile-name> --debug 3 --output-insecure

Example for Lego

docker run -i -v $PWD/lego:/.lego/ --rm --name lego goacme/lego -s http://<acme-srv> -a --email "[email protected]" --user-agent profile_name=<profile_name> -d <fqdn> --http run
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