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-rw-r--r--nixos/tests/all-tests.nix1
-rw-r--r--nixos/tests/keycloak.nix139
-rw-r--r--pkgs/servers/keycloak/default.nix4
3 files changed, 143 insertions, 1 deletions
diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 9ffeba27a7fe4..5a10f60fc9a38 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -175,6 +175,7 @@ in
   kernel-latest = handleTest ./kernel-latest.nix {};
   kernel-lts = handleTest ./kernel-lts.nix {};
   kernel-testing = handleTest ./kernel-testing.nix {};
+  keycloak = handleTest ./keycloak.nix {};
   keymap = handleTest ./keymap.nix {};
   knot = handleTest ./knot.nix {};
   krb5 = discoverTests (import ./krb5 {});
diff --git a/nixos/tests/keycloak.nix b/nixos/tests/keycloak.nix
new file mode 100644
index 0000000000000..e5e31b038e9cf
--- /dev/null
+++ b/nixos/tests/keycloak.nix
@@ -0,0 +1,139 @@
+# This tests Keycloak: it starts the service, creates a realm with an
+# OIDC client and a user, and simulates the user logging in to the
+# client using their Keycloak login.
+
+import ./make-test-python.nix (
+  { pkgs, ... }:
+  let
+    frontendUrl = "http://keycloak/auth";
+    initialAdminPassword = "h4IhoJFnt2iQIR9";
+  in
+    {
+      name = "keycloak";
+      meta = with pkgs.stdenv.lib.maintainers; {
+        maintainers = [ talyz ];
+      };
+
+      nodes = {
+        keycloak = { ... }: {
+          virtualisation.memorySize = 1024;
+          services.keycloak = {
+            enable = true;
+            inherit frontendUrl initialAdminPassword;
+            databasePasswordFile = pkgs.writeText "dbPassword" "wzf6vOCbPp6cqTH";
+          };
+          environment.systemPackages = with pkgs; [
+            xmlstarlet
+            libtidy
+            jq
+          ];
+        };
+      };
+
+      testScript =
+        let
+          client = {
+            clientId = "test-client";
+            name = "test-client";
+            redirectUris = [ "urn:ietf:wg:oauth:2.0:oob" ];
+          };
+
+          user = {
+            firstName = "Chuck";
+            lastName = "Testa";
+            username = "chuck.testa";
+            email = "chuck.testa@example.com";
+          };
+
+          password = "password1234";
+
+          realm = {
+            enabled = true;
+            realm = "test-realm";
+            clients = [ client ];
+            users = [(
+              user // {
+                enabled = true;
+                credentials = [{
+                  type = "password";
+                  temporary = false;
+                  value = password;
+                }];
+              }
+            )];
+          };
+
+          realmDataJson = pkgs.writeText "realm-data.json" (builtins.toJSON realm);
+
+          jqCheckUserinfo = pkgs.writeText "check-userinfo.jq" ''
+            if {
+              "firstName": .given_name,
+              "lastName": .family_name,
+              "username": .preferred_username,
+              "email": .email
+            } != ${builtins.toJSON user} then
+              error("Wrong user info!")
+            else
+              empty
+            end
+          '';
+        in ''
+          keycloak.start()
+          keycloak.wait_for_unit("keycloak.service")
+          keycloak.wait_until_succeeds("curl -sSf ${frontendUrl}")
+
+
+          ### Realm Setup ###
+
+          # Get an admin interface access token
+          keycloak.succeed(
+              "curl -sSf -d 'client_id=admin-cli' -d 'username=admin' -d 'password=${initialAdminPassword}' -d 'grant_type=password' '${frontendUrl}/realms/master/protocol/openid-connect/token' | jq -r '\"Authorization: bearer \" + .access_token' >admin_auth_header"
+          )
+
+          # Publish the realm, including a test OIDC client and user
+          keycloak.succeed(
+              "curl -sSf -H @admin_auth_header -X POST -H 'Content-Type: application/json' -d @${realmDataJson} '${frontendUrl}/admin/realms/'"
+          )
+
+          # Generate and save the client secret. To do this we need
+          # Keycloak's internal id for the client.
+          keycloak.succeed(
+              "curl -sSf -H @admin_auth_header '${frontendUrl}/admin/realms/${realm.realm}/clients?clientId=${client.name}' | jq -r '.[].id' >client_id",
+              "curl -sSf -H @admin_auth_header -X POST '${frontendUrl}/admin/realms/${realm.realm}/clients/'$(<client_id)'/client-secret' | jq -r .value >client_secret",
+          )
+
+
+          ### Authentication Testing ###
+
+          # Start the login process by sending an initial request to the
+          # OIDC authentication endpoint, saving the returned page. Tidy
+          # up the HTML (XmlStarlet is picky) and extract the login form
+          # post url.
+          keycloak.succeed(
+              "curl -sSf -c cookie '${frontendUrl}/realms/${realm.realm}/protocol/openid-connect/auth?client_id=${client.name}&redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob&scope=openid+email&response_type=code&response_mode=query&nonce=qw4o89g3qqm' >login_form",
+              "tidy -q -m login_form || true",
+              "xml sel -T -t -m \"_:html/_:body/_:div/_:div/_:div/_:div/_:div/_:div/_:form[@id='kc-form-login']\" -v @action login_form >form_post_url",
+          )
+
+          # Post the login form and save the response. Once again tidy up
+          # the HTML, then extract the authorization code.
+          keycloak.succeed(
+              "curl -sSf -L -b cookie -d 'username=${user.username}' -d 'password=${password}' -d 'credentialId=' \"$(<form_post_url)\" >auth_code_html",
+              "tidy -q -m auth_code_html || true",
+              "xml sel -T -t -m \"_:html/_:body/_:div/_:div/_:div/_:div/_:div/_:input[@id='code']\" -v @value auth_code_html >auth_code",
+          )
+
+          # Exchange the authorization code for an access token.
+          keycloak.succeed(
+              "curl -sSf -d grant_type=authorization_code -d code=$(<auth_code) -d client_id=${client.name} -d client_secret=$(<client_secret) -d redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob '${frontendUrl}/realms/${realm.realm}/protocol/openid-connect/token' | jq -r '\"Authorization: bearer \" + .access_token' >auth_header"
+          )
+
+          # Use the access token on the OIDC userinfo endpoint and check
+          # that the returned user info matches what we initialized the
+          # realm with.
+          keycloak.succeed(
+              "curl -sSf -H @auth_header '${frontendUrl}/realms/${realm.realm}/protocol/openid-connect/userinfo' | jq -f ${jqCheckUserinfo}"
+          )
+        '';
+    }
+)
diff --git a/pkgs/servers/keycloak/default.nix b/pkgs/servers/keycloak/default.nix
index c694b6a419f5b..95935ce8f8aec 100644
--- a/pkgs/servers/keycloak/default.nix
+++ b/pkgs/servers/keycloak/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchzip, makeWrapper, jre, writeText
+{ stdenv, fetchzip, makeWrapper, jre, writeText, nixosTests
 , postgresql_jdbc ? null
 }:
 
@@ -50,6 +50,8 @@ stdenv.mkDerivation rec {
     wrapProgram $out/bin/jboss-cli.sh --set JAVA_HOME ${jre}
   '';
 
+  passthru.tests = nixosTests.keycloak;
+
   meta = with stdenv.lib; {
     homepage    = "https://www.keycloak.org/";
     description = "Identity and access management for modern applications and services";