Developer Guide - Kanidm Administration

Getting Started (for Developers)

Setup the Server

It's important before you start trying to write code and contribute that you understand what Kanidm does and its goals.

An important first step is to install the server so if you have not done that yet, go and try that now! 😄

Setting up your Machine

Each operating system has different steps required to configure and build Kanidm.

MacOS

A prerequisite is Apple Xcode for access to git and compiler tools. You should install this first.

You will need rustup to install a Rust toolchain.

SUSE / OpenSUSE

You will need to install rustup and our build dependencies with:

zypper in rustup git libudev-devel sqlite3-devel libopenssl-3-devel

You can then use rustup to complete the setup of the toolchain.

Fedora

You will need rustup to install a Rust toolchain.

You will also need some system libraries to build this:

systemd-devel sqlite-devel openssl-devel pam-devel

Building the Web UI requires additional packages:

perl-FindBin perl-File-Compare

Windows

{{#template templates/kani-warning.md imagepath=images title=NOTICE text=Our support for Windows is still in development, so you may encounter some compilation or build issues. }}

You need rustup to install a Rust toolchain.

An easy way to grab the dependencies is to install vcpkg.

This is how it works in the automated build:

Enable use of installed packages for the user system-wide:

vcpkg integrate install

Install the openssl dependency, which compiles it from source. This downloads all sorts of dependencies, including perl for the build.

vcpkg install openssl:x64-windows-static-md

There's a powershell script in the root directory of the repository which, in concert with openssl will generate a config file and certs for testing.

Get Involved

To get started, you'll need to fork or branch, and we'll merge based on pull requests.

Kanidm is (largely) a monorepo. This can be checked out with:

git clone https://github.com/kanidm/kanidm.git
cd kanidm

Other supporting projects can be found on the project github

If you are forking, then fork in GitHub and then add your remote.

git remote add myfork git@github.com:<YOUR USERNAME>/kanidm.git

Select an issue (always feel free to reach out to us for advice!), and create a branch to start working:

git branch <feature-branch-name>
git checkout <feature-branch-name>
cargo test

When you are ready for review (even if the feature isn't complete and you just want some advice):

Run the test suite: cargo test
Ensure rust formatting standards are followed: cargo fmt --check
Try following the suggestions from clippy, after running cargo clippy. This is not a blocker on us accepting your code!
Then commit your changes:

git commit -m 'Commit message' change_file.rs ...
git push <myfork> <feature-branch-name>

If you receive advice or make further changes, just keep committing to the branch, and pushing to your branch. When we are happy with the code, we'll merge in GitHub, meaning you can now clean up your branch.

git checkout master
git pull
git branch -D <feature-branch-name>

Rebasing

If you are asked to rebase your change, follow these steps:

git checkout master
git pull
git checkout <feature-branch-name>
git rebase master

Then be sure to fix any merge issues or other comments as they arise. If you have issues, you can always stop and reset with:

git rebase --abort

Building the Book

You'll need mdbook to build the book:

cargo install mdbook

To build it:

make book

Or to run a local webserver:

cd book
mdbook serve

Designs

See the "Design Documents" section of this book.

Rust Documentation

A list of links to the library documentation is at kanidm.com/documentation.

Advanced

Minimum Supported Rust Version

The MSRV is specified in the package Cargo.toml files.

We tend to be quite proactive in updating this to recent rust versions so we are open to increasing this value if required!

Build Profiles

Build profiles allow us to change the operation of Kanidm during it's compilation for development or release on various platforms. By default the "developer" profile is used that assumes the correct relative paths within the monorepo.

Setting different developer profiles while building is done by setting the environment variable KANIDM_BUILD_PROFILE to one of the bare filename of the TOML files in /profiles.

For example, this will set the CPU flags to "none" and the location for the Web UI files to /usr/share/kanidm/ui/pkg:

KANIDM_BUILD_PROFILE=release_suse_generic cargo build --release --bin kanidmd

Building the Web UI

NOTE: There is a pre-packaged version of the Web UI at /server/web_ui/pkg/, which can be used directly. This means you don't need to build the Web UI yourself.

The Web UI uses Rust WebAssembly rather than Javascript. To build this you need to set up the environment:

cargo install wasm-pack

Then you are able to build the UI:

cd server/web_ui/
./build_wasm_dev.sh

To build for release, run build_wasm_release.sh.

The "developer" profile for kanidmd will automatically use the pkg output in this folder.

Development Server for Interactive Testing

Especially if you wish to develop the WebUI then the ability to run the server from the source tree is critical.

Once you have the source code, you need encryption certificates to use with the server, because without certificates, authentication will fail.

We recommend using Let's Encrypt, but if this is not possible, please use our insecure certificate tool (scripts/insecure_generate_tls.sh). The insecure certificate tool creates /tmp/kanidm and puts some self-signed certificates there.

NOTE: Windows developers can use scripts/insecure_generate_tls.ps1, which puts everything (including a templated config file) in $TEMP\kanidm. Please adjust paths below to suit.

You can now build and run the server with the commands below. It will use a database in /tmp/kanidm.db.

Create the initial database and generate an admin password:

cd server/daemon
./run_insecure_dev_server.sh recover-account admin

Record the password above, then run the server start command:

./run_insecure_dev_server.sh

In a new terminal, you can now build and run the client tools with:

cargo run --bin kanidm -- --help
cargo run --bin kanidm -- login -H https://localhost:8443 -D anonymous -C /tmp/kanidm/ca.pem
cargo run --bin kanidm -- self whoami -H https://localhost:8443 -D anonymous -C /tmp/kanidm/ca.pem

cargo run --bin kanidm -- login -H https://localhost:8443 -D admin -C /tmp/kanidm/ca.pem
cargo run --bin kanidm -- self whoami -H https://localhost:8443 -D admin -C /tmp/kanidm/ca.pem

You may find it easier to modify ~/.config/kanidm per the book client tools section for extended administration locally.

Raw actions

{{#template templates/kani-warning.md imagepath=images title=NOTICE text=It's not recommended to use these tools outside of extremely complex or advanced development requirements. These are a last resort! }}

The server has a low-level stateful API you can use for more complex or advanced tasks on large numbers of entries at once. Some examples are below, but generally we advise you to use the APIs or CLI tools. These are very handy to "unbreak" something if you make a mistake however!

# Create from json (group or account)
kanidm raw create -H https://localhost:8443 -C ../insecure/ca.pem -D admin example.create.account.json
kanidm raw create  -H https://localhost:8443 -C ../insecure/ca.pem -D idm_admin example.create.group.json

# Apply a json stateful modification to all entries matching a filter
kanidm raw modify -H https://localhost:8443 -C ../insecure/ca.pem -D admin '{"or": [ {"eq": ["name", "idm_person_account_create_priv"]}, {"eq": ["name", "idm_service_account_create_priv"]}, {"eq": ["name", "idm_account_write_priv"]}, {"eq": ["name", "idm_group_write_priv"]}, {"eq": ["name", "idm_people_write_priv"]}, {"eq": ["name", "idm_group_create_priv"]} ]}' example.modify.idm_admin.json
kanidm raw modify -H https://localhost:8443 -C ../insecure/ca.pem -D idm_admin '{"eq": ["name", "idm_admins"]}' example.modify.idm_admin.json

# Search and show the database representations
kanidm raw search -H https://localhost:8443 -C ../insecure/ca.pem -D admin '{"eq": ["name", "idm_admin"]}'

# Delete all entries matching a filter
kanidm raw delete -H https://localhost:8443 -C ../insecure/ca.pem -D idm_admin '{"eq": ["name", "test_account_delete_me"]}'

Build a Kanidm Container

Build a container with the current branch using:

make <TARGET>

Check make help for a list of valid targets.

The following environment variables control the build:

ENV variable	Definition	Default
`IMAGE_BASE`	Base location of the container image.	`kanidm`
`IMAGE_VERSION`	Determines the container's tag.	None
`CONTAINER_TOOL_ARGS`	Specify extra options for the container build tool.	None
`IMAGE_ARCH`	Passed to `--platforms` when the container is built.	`linux/amd64,linux/arm64`
`CONTAINER_BUILD_ARGS`	Override default ARG settings during the container build.	None
`CONTAINER_TOOL`	Use an alternative container build tool.	`docker`
`BOOK_VERSION`	Sets version used when building the documentation book.	`master`

Container Build Examples

Build a kanidm container using podman:

CONTAINER_TOOL=podman make build/kanidmd

Build a kanidm container and use a redis build cache:

CONTAINER_BUILD_ARGS='--build-arg "SCCACHE_REDIS=redis://redis.dev.blackhats.net.au:6379"' make build/kanidmd

Automatically Built Containers

To speed up testing across platforms, we're leveraging GitHub actions to build containers for test use.

Whenever code is merged with the master branch of Kanidm, containers are automatically built for kanidmd and radius. Sometimes they fail to build, but we'll try to keep them available.

To find information on the packages, visit the Kanidm packages page.

An example command for pulling and running the radius container is below. You'll need to authenticate with the GitHub container registry first.

docker pull ghcr.io/kanidm/radius:devel
docker run --rm -it \
    -v $(pwd)/kanidm:/data/kanidm \
    ghcr.io/kanidm/radius:devel

This assumes you have a kanidm client configuration file in the current working directory.

Kanidm Administration