Wire Forgejo sign-in through Authentik
This commit is contained in:
Conrad Kramer
parent
7f280c08cf
commit
0e68c25a99
7 changed files with 434 additions and 3 deletions
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@ -8,6 +8,7 @@ let
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blueprintFile = "${blueprintDir}/burrow-authentik.yaml";
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postgresVolume = "burrow-authentik-postgresql:/var/lib/postgresql/data";
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dataVolume = "burrow-authentik-data:/data";
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forgejoOidcSyncScript = ../../Scripts/authentik-sync-forgejo-oidc.sh;
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googleSourceSyncScript = ../../Scripts/authentik-sync-google-source.sh;
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authentikBlueprint = pkgs.writeText "burrow-authentik-blueprint.yaml" ''
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version: 1
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@ -102,6 +103,30 @@ in
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description = "Authentik provider slug for Headscale.";
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};
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forgejoDomain = lib.mkOption {
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type = lib.types.str;
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default = "git.burrow.net";
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description = "Forgejo public domain used for the bundled OIDC client.";
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};
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forgejoProviderSlug = lib.mkOption {
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type = lib.types.str;
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default = "git";
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description = "Authentik application slug for Forgejo.";
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};
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forgejoClientId = lib.mkOption {
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type = lib.types.str;
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default = "git.burrow.net";
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description = "Client ID Authentik should present to Forgejo.";
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};
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forgejoClientSecretFile = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = "Host-local file containing the Authentik Forgejo OIDC client secret.";
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};
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headscaleClientSecretFile = lib.mkOption {
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type = lib.types.str;
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default = "/var/lib/burrow/intake/authentik_headscale_client_secret.txt";
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@ -182,6 +207,13 @@ in
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exit 1
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fi
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${lib.optionalString (cfg.forgejoClientSecretFile != null) ''
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if [ ! -s ${lib.escapeShellArg cfg.forgejoClientSecretFile} ]; then
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echo "Forgejo client secret missing: ${cfg.forgejoClientSecretFile}" >&2
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exit 1
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fi
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''}
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install -d -m 0750 -o root -g root ${runtimeDir} ${blueprintDir}
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install -m 0644 -o root -g root ${authentikBlueprint} ${blueprintFile}
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@ -208,6 +240,7 @@ AUTHENTIK_SECRET_KEY=$AUTHENTIK_SECRET_KEY
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AUTHENTIK_BOOTSTRAP_PASSWORD=$AUTHENTIK_BOOTSTRAP_PASSWORD
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AUTHENTIK_BOOTSTRAP_TOKEN=$AUTHENTIK_BOOTSTRAP_TOKEN
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AUTHENTIK_BURROW_TS_CLIENT_SECRET=$(read_secret ${lib.escapeShellArg cfg.headscaleClientSecretFile})
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${lib.optionalString (cfg.forgejoClientSecretFile != null) "AUTHENTIK_BURROW_FORGEJO_CLIENT_SECRET=$(read_secret ${lib.escapeShellArg cfg.forgejoClientSecretFile})"}
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EOF
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chown root:root ${envFile}
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chmod 0600 ${envFile}
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@ -320,8 +353,6 @@ EOF
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Type = "oneshot";
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User = "root";
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Group = "root";
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Restart = "on-failure";
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RestartSec = 5;
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};
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script = ''
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set -euo pipefail
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@ -340,6 +371,52 @@ EOF
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'';
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};
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systemd.services.burrow-authentik-forgejo-oidc = lib.mkIf (cfg.forgejoClientSecretFile != null) {
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description = "Reconcile the Burrow Authentik Forgejo OIDC application";
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after = [
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"burrow-authentik-ready.service"
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"network-online.target"
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];
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wants = [
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"burrow-authentik-ready.service"
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"network-online.target"
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];
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wantedBy = [ "multi-user.target" ];
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restartTriggers = [
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forgejoOidcSyncScript
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cfg.envFile
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cfg.forgejoClientSecretFile
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];
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path = [
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pkgs.bash
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pkgs.coreutils
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pkgs.curl
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pkgs.jq
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];
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serviceConfig = {
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Type = "oneshot";
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User = "root";
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Group = "root";
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};
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script = ''
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set -euo pipefail
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set -a
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source ${lib.escapeShellArg cfg.envFile}
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set +a
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export AUTHENTIK_URL=https://${cfg.domain}
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export AUTHENTIK_FORGEJO_APPLICATION_SLUG=${lib.escapeShellArg cfg.forgejoProviderSlug}
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export AUTHENTIK_FORGEJO_APPLICATION_NAME=burrow.net
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export AUTHENTIK_FORGEJO_PROVIDER_NAME=burrow.net
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export AUTHENTIK_FORGEJO_CLIENT_ID=${lib.escapeShellArg cfg.forgejoClientId}
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export AUTHENTIK_FORGEJO_CLIENT_SECRET="$(tr -d '\r\n' < ${lib.escapeShellArg cfg.forgejoClientSecretFile})"
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export AUTHENTIK_FORGEJO_LAUNCH_URL=https://${cfg.forgejoDomain}/
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export AUTHENTIK_FORGEJO_REDIRECT_URIS_JSON='["https://${cfg.forgejoDomain}/user/oauth2/burrow.net/callback","https://${cfg.forgejoDomain}/user/oauth2/authentik/callback","https://${cfg.forgejoDomain}/user/oauth2/GitHub/callback"]'
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${pkgs.bash}/bin/bash ${forgejoOidcSyncScript}
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'';
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};
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services.caddy.virtualHosts."${cfg.domain}".extraConfig = ''
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encode gzip zstd
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reverse_proxy 127.0.0.1:${toString cfg.port}
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@ -68,6 +68,30 @@ in
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description = "Host-local path to the plaintext bootstrap password file for the initial Forgejo admin.";
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};
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oidcDisplayName = lib.mkOption {
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type = lib.types.str;
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default = "burrow.net";
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description = "Login button label for the Forgejo OIDC provider.";
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};
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oidcClientId = lib.mkOption {
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type = lib.types.str;
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default = "git.burrow.net";
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description = "OIDC client ID that Forgejo should use against Authentik.";
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};
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oidcClientSecretFile = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = "Host-local path to the Forgejo OIDC client secret.";
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};
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oidcDiscoveryUrl = lib.mkOption {
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type = lib.types.str;
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default = "https://auth.burrow.net/application/o/git/.well-known/openid-configuration";
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description = "OpenID Connect discovery URL for the Forgejo login source.";
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};
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authorizedKeys = lib.mkOption {
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type = with lib.types; listOf str;
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default = [ ];
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@ -243,5 +267,113 @@ in
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fi
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'';
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};
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systemd.services.burrow-forgejo-oidc-bootstrap = lib.mkIf (cfg.oidcClientSecretFile != null) {
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description = "Seed the Burrow Forgejo OIDC login source";
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after = [
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"forgejo.service"
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"postgresql.service"
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] ++ lib.optionals config.services.burrow.authentik.enable [
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"burrow-authentik-ready.service"
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];
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wants = lib.optionals config.services.burrow.authentik.enable [
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"burrow-authentik-ready.service"
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];
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requires = [
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"forgejo.service"
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"postgresql.service"
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];
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wantedBy = [ "multi-user.target" ];
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restartTriggers = [
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cfg.oidcClientSecretFile
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];
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path = [
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pkgs.coreutils
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pkgs.gnugrep
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pkgs.jq
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pkgs.postgresql
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];
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serviceConfig = {
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Type = "oneshot";
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User = forgejoCfg.user;
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Group = forgejoCfg.group;
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WorkingDirectory = forgejoCfg.stateDir;
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};
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script = ''
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set -euo pipefail
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if [ ! -s ${lib.escapeShellArg cfg.oidcClientSecretFile} ]; then
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echo "Forgejo OIDC client secret missing: ${cfg.oidcClientSecretFile}" >&2
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exit 1
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fi
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ready=0
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for attempt in $(seq 1 60); do
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if ${pkgs.postgresql}/bin/psql -h /run/postgresql -U forgejo forgejo -tAc \
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"SELECT 1 FROM pg_tables WHERE schemaname='public' AND tablename='login_source';" \
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| grep -q 1; then
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ready=1
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break
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fi
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sleep 1
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done
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if [ "$ready" -ne 1 ]; then
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echo "Forgejo login_source table did not become ready" >&2
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exit 1
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fi
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oidc_secret="$(${pkgs.coreutils}/bin/tr -d '\r\n' < ${lib.escapeShellArg cfg.oidcClientSecretFile})"
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if [ -z "$oidc_secret" ]; then
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echo "Forgejo OIDC client secret is empty" >&2
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exit 1
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fi
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cfg_json="$(${pkgs.jq}/bin/jq -nc \
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--arg client_id ${lib.escapeShellArg cfg.oidcClientId} \
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--arg client_secret "$oidc_secret" \
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--arg discovery_url ${lib.escapeShellArg cfg.oidcDiscoveryUrl} \
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'{
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Provider: "openidConnect",
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ClientID: $client_id,
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ClientSecret: $client_secret,
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OpenIDConnectAutoDiscoveryURL: $discovery_url,
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CustomURLMapping: null,
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IconURL: "",
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Scopes: ["openid", "profile", "email"],
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AttributeSSHPublicKey: "",
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RequiredClaimName: "",
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RequiredClaimValue: "",
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GroupClaimName: "",
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AdminGroup: "",
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GroupTeamMap: "",
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GroupTeamMapRemoval: false,
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RestrictedGroup: ""
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}')"
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${pkgs.postgresql}/bin/psql -v ON_ERROR_STOP=1 \
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-h /run/postgresql -U forgejo forgejo \
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-v oidc_name=${lib.escapeShellArg cfg.oidcDisplayName} \
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-v cfg_json="$cfg_json" <<'SQL'
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INSERT INTO login_source (
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type, name, is_active, is_sync_enabled, cfg, created_unix, updated_unix
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) VALUES (
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6,
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:'oidc_name',
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TRUE,
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FALSE,
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:'cfg_json',
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EXTRACT(EPOCH FROM NOW())::BIGINT,
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EXTRACT(EPOCH FROM NOW())::BIGINT
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)
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ON CONFLICT (name) DO UPDATE SET
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type = EXCLUDED.type,
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is_active = TRUE,
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is_sync_enabled = FALSE,
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cfg = EXCLUDED.cfg,
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updated_unix = EXCLUDED.updated_unix;
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SQL
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'';
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};
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};
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}
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