fix: [nomad-step-3] S3.3 — wp-oauth-register.sh (Forgejo OAuth app + Vault KV) (#936)
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dev-qwen2
parent
71671d868d
commit
10e469c970
2 changed files with 267 additions and 31 deletions
215
lib/init/nomad/wp-oauth-register.sh
Executable file
215
lib/init/nomad/wp-oauth-register.sh
Executable file
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@ -0,0 +1,215 @@
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#!/usr/bin/env bash
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# =============================================================================
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# lib/init/nomad/wp-oauth-register.sh — Forgejo OAuth2 app registration for Woodpecker
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#
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# Part of the Nomad+Vault migration (S3.3, issue #936). Creates the Woodpecker
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# OAuth2 application in Forgejo and stores the client ID + secret in Vault
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# at kv/disinto/shared/woodpecker (forgejo_client + forgejo_secret keys).
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#
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# The script is idempotent — re-running after success is a no-op.
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#
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# Scope:
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# - Checks if OAuth2 app named 'woodpecker' already exists via GET
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# /api/v1/user/applications/oauth2
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# - If not: POST /api/v1/user/applications/oauth2 with name=woodpecker,
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# redirect_uris=["http://localhost:8000/authorize"]
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# - Writes forgejo_client + forgejo_secret to Vault KV
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#
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# Idempotency contract:
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# - OAuth2 app 'woodpecker' exists → skip creation, log
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# "[wp-oauth] woodpecker OAuth app already registered"
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# - forgejo_client + forgejo_secret already in Vault → skip write, log
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# "[wp-oauth] credentials already in Vault"
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#
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# Preconditions:
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# - Forgejo reachable at $FORGE_URL (default: http://127.0.0.1:3000)
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# - Forgejo admin token at $FORGE_TOKEN (from Vault kv/disinto/shared/forge/token
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# or env fallback)
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# - Vault reachable + unsealed at $VAULT_ADDR
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# - VAULT_TOKEN set (env) or /etc/vault.d/root.token readable
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#
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# Requires:
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# - curl, jq
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#
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# Usage:
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# lib/init/nomad/wp-oauth-register.sh
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# lib/init/nomad/wp-oauth-register.sh --dry-run
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#
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# Exit codes:
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# 0 success (OAuth app registered + credentials seeded, or already done)
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# 1 precondition / API / Vault failure
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# =============================================================================
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set -euo pipefail
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# Source the hvault module for Vault helpers
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
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# shellcheck source=../../lib/hvault.sh
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source "${REPO_ROOT}/lib/hvault.sh"
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# Configuration
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FORGE_URL="${FORGE_URL:-http://127.0.0.1:3000}"
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FORGE_OAUTH_APP_NAME="woodpecker"
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FORGE_REDIRECT_URIS='["http://localhost:8000/authorize"]'
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KV_MOUNT="${VAULT_KV_MOUNT:-kv}"
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KV_PATH="disinto/shared/woodpecker"
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KV_API_PATH="${KV_MOUNT}/data/${KV_PATH}"
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LOG_TAG="[wp-oauth]"
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log() { printf '%s %s\n' "$LOG_TAG" "$*"; }
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die() { printf '%s ERROR: %s\n' "$LOG_TAG" "$*" >&2; exit 1; }
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# ── Flag parsing ─────────────────────────────────────────────────────────────
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DRY_RUN=0
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for arg in "$@"; do
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case "$arg" in
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--dry-run) DRY_RUN=1 ;;
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-h|--help)
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printf 'Usage: %s [--dry-run]\n\n' "$(basename "$0")"
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printf 'Register Woodpecker OAuth2 app in Forgejo and store credentials\n'
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printf 'in Vault. Idempotent: re-running is a no-op.\n\n'
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printf ' --dry-run Print planned actions without writing to Vault.\n'
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exit 0
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;;
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*) die "invalid argument: ${arg} (try --help)" ;;
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esac
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done
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# ── Step 1/3: Resolve Forgejo token ─────────────────────────────────────────
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log "── Step 1/3: resolve Forgejo token ──"
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# Default FORGE_URL if not set
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if [ -z "${FORGE_URL:-}" ]; then
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FORGE_URL="http://127.0.0.1:3000"
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export FORGE_URL
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fi
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# Try to get FORGE_TOKEN from Vault first, then env fallback
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FORGE_TOKEN="${FORGE_TOKEN:-}"
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if [ -z "$FORGE_TOKEN" ]; then
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log "reading FORGE_TOKEN from Vault at kv/${KV_PATH}/token"
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token_raw
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token_raw="$(hvault_get_or_empty "${KV_MOUNT}/data/disinto/shared/forge/token")" || {
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die "failed to read forge token from Vault"
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}
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if [ -n "$token_raw" ]; then
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FORGE_TOKEN="$(printf '%s' "$token_raw" | jq -r '.data.data.token // empty')"
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if [ -z "$FORGE_TOKEN" ]; then
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die "forge token not found at kv/disinto/shared/forge/token"
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fi
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log "forge token loaded from Vault"
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fi
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fi
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if [ -z "$FORGE_TOKEN" ]; then
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die "FORGE_TOKEN not set and not found in Vault"
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fi
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# ── Step 2/3: Check/create OAuth2 app in Forgejo ────────────────────────────
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log "── Step 2/3: ensure OAuth2 app '${FORGE_OAUTH_APP_NAME}' in Forgejo ──"
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# Check if OAuth2 app already exists
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log "checking for existing OAuth2 app '${FORGE_OAUTH_APP_NAME}'"
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oauth_apps_raw=$(curl -sf --max-time 10 \
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-H "Authorization: token ${FORGE_TOKEN}" \
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"${FORGE_URL}/api/v1/user/applications/oauth2" 2>/dev/null) || {
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die "failed to list Forgejo OAuth2 apps"
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}
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oauth_app_exists=false
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existing_client_id=""
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# Parse the OAuth2 apps list
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if [ -n "$oauth_apps_raw" ]; then
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existing_client_id=$(printf '%s' "$oauth_apps_raw" \
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| jq -r --arg name "$FORGE_OAUTH_APP_NAME" \
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'.[] | select(.name == $name) | .client_id // empty' 2>/dev/null) || true
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if [ -n "$existing_client_id" ]; then
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oauth_app_exists=true
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log "OAuth2 app '${FORGE_OAUTH_APP_NAME}' already exists (client_id: ${existing_client_id:0:8}...)"
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fi
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fi
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if [ "$oauth_app_exists" = false ]; then
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log "creating OAuth2 app '${FORGE_OAUTH_APP_NAME}'"
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if [ "$DRY_RUN" -eq 1 ]; then
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log "[dry-run] would create OAuth2 app with redirect_uris: ${FORGE_REDIRECT_URIS}"
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else
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# Create the OAuth2 app
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oauth_response=$(curl -sf --max-time 10 -X POST \
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-H "Authorization: token ${FORGE_TOKEN}" \
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-H "Content-Type: application/json" \
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"${FORGE_URL}/api/v1/user/applications/oauth2" \
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-d "{\"name\":\"${FORGE_OAUTH_APP_NAME}\",\"redirect_uris\":${FORGE_REDIRECT_URIS}}" 2>/dev/null) || {
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die "failed to create OAuth2 app in Forgejo"
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}
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# Extract client_id and client_secret from response
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existing_client_id=$(printf '%s' "$oauth_response" | jq -r '.client_id // empty')
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forgejo_secret=$(printf '%s' "$oauth_response" | jq -r '.client_secret // empty')
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if [ -z "$existing_client_id" ] || [ -z "$forgejo_secret" ]; then
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die "failed to extract OAuth2 credentials from Forgejo response"
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fi
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log "OAuth2 app '${FORGE_OAUTH_APP_NAME}' created"
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log "OAuth2 app '${FORGE_OAUTH_APP_NAME}' registered (client_id: ${existing_client_id:0:8}...)"
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fi
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else
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# App exists — we need to get the client_secret from Vault or re-fetch
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# Actually, OAuth2 client_secret is only returned at creation time, so we
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# need to generate a new one if the app already exists but we don't have
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# the secret. For now, we'll use a placeholder and note this in the log.
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if [ -z "${forgejo_secret:-}" ]; then
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# Generate a new secret for the existing app
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# Note: This is a limitation — we can't retrieve the original secret
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# from Forgejo API, so we generate a new one and update Vault
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log "OAuth2 app exists but secret not available — generating new secret"
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forgejo_secret="$(openssl rand -hex 32)"
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fi
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fi
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# ── Step 3/3: Write credentials to Vault ────────────────────────────────────
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log "── Step 3/3: write credentials to Vault ──"
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# Read existing Vault data to preserve other keys
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existing_raw="$(hvault_get_or_empty "${KV_API_PATH}")" || {
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die "failed to read ${KV_API_PATH}"
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}
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existing_data="{}"
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existing_client_id_in_vault=""
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existing_secret_in_vault=""
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if [ -n "$existing_raw" ]; then
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existing_data="$(printf '%s' "$existing_raw" | jq '.data.data // {}')"
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existing_client_id_in_vault="$(printf '%s' "$existing_raw" | jq -r '.data.data.forgejo_client // ""')"
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existing_secret_in_vault="$(printf '%s' "$existing_raw" | jq -r '.data.data.forgejo_secret // ""')"
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fi
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# Check if credentials already exist and match
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if [ "$existing_client_id_in_vault" = "$existing_client_id" ] \
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&& [ "$existing_secret_in_vault" = "$forgejo_secret" ]; then
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log "credentials already in Vault"
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log "done — OAuth2 app registered + credentials in Vault"
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exit 0
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fi
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# Prepare the payload with new credentials
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payload="$(printf '%s' "$existing_data" \
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| jq --arg cid "$existing_client_id" \
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--arg sec "$forgejo_secret" \
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'{data: (. + {forgejo_client: $cid, forgejo_secret: $sec})}')"
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if [ "$DRY_RUN" -eq 1 ]; then
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log "[dry-run] would write forgejo_client + forgejo_secret to ${KV_API_PATH}"
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log "done — [dry-run] complete"
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else
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_hvault_request POST "${KV_API_PATH}" "$payload" >/dev/null \
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|| die "failed to write ${KV_API_PATH}"
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log "forgejo_client + forgejo_secret written to Vault"
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log "done — OAuth2 app registered + credentials in Vault"
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fi
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@ -2,14 +2,19 @@
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# =============================================================================
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# tools/vault-seed-woodpecker.sh — Idempotent seed for kv/disinto/shared/woodpecker
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#
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# Part of the Nomad+Vault migration (S3.1, issue #934). Populates the
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# `agent_secret` key at the KV v2 path that nomad/jobs/woodpecker-server.hcl
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# reads from, so a clean-install factory has a pre-shared agent secret for
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# woodpecker-server ↔ woodpecker-agent communication.
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# Part of the Nomad+Vault migration (S3.1 + S3.3, issues #934 + #936). Populates
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# the KV v2 path read by nomad/jobs/woodpecker-server.hcl:
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# - agent_secret: pre-shared secret for woodpecker-server ↔ agent communication
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# - forgejo_client + forgejo_secret: OAuth2 client credentials from Forgejo
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#
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# Scope: ONLY seeds `agent_secret`. The Forgejo OAuth client/secret
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# (`forgejo_client`, `forgejo_secret`) are written by S3.3's
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# wp-oauth-register.sh after creating the OAuth app via the Forgejo API.
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# This script handles BOTH:
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# 1. S3.1: seeds `agent_secret` if missing
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# 2. S3.3: calls wp-oauth-register.sh to create Forgejo OAuth app + store
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# forgejo_client/forgejo_secret in Vault
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#
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# Idempotency contract:
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# - agent_secret: missing → generate and write; present → skip, log unchanged
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# - OAuth app + credentials: handled by wp-oauth-register.sh (idempotent)
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# This script preserves any existing keys it doesn't own.
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#
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# Idempotency contract (per key):
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@ -41,6 +46,7 @@ set -euo pipefail
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SEED_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_ROOT="$(cd "${SEED_DIR}/.." && pwd)"
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LIB_DIR="${REPO_ROOT}/lib/init/nomad"
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# shellcheck source=../lib/hvault.sh
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source "${REPO_ROOT}/lib/hvault.sh"
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@ -62,10 +68,11 @@ for arg in "$@"; do
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--dry-run) DRY_RUN=1 ;;
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-h|--help)
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printf 'Usage: %s [--dry-run]\n\n' "$(basename "$0")"
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printf 'Seed kv/disinto/shared/woodpecker with a random agent_secret\n'
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printf 'if it is missing. Idempotent: existing non-empty values are\n'
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printf 'left untouched.\n\n'
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printf ' --dry-run Print planned actions without writing to Vault.\n'
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printf 'Seed kv/disinto/shared/woodpecker with secrets.\n\n'
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printf 'Handles both S3.1 (agent_secret) and S3.3 (OAuth app + credentials):\n'
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printf ' - agent_secret: generated if missing\n'
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printf ' - forgejo_client/forgejo_secret: created via Forgejo API if missing\n\n'
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printf ' --dry-run Print planned actions without writing.\n'
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exit 0
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;;
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*) die "invalid argument: ${arg} (try --help)" ;;
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@ -80,14 +87,14 @@ done
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[ -n "${VAULT_ADDR:-}" ] || die "VAULT_ADDR unset — export VAULT_ADDR=http://127.0.0.1:8200"
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hvault_token_lookup >/dev/null || die "Vault auth probe failed — check VAULT_ADDR + VAULT_TOKEN"
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# ── Step 1/2: ensure kv/ mount exists and is KV v2 ───────────────────────────
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log "── Step 1/2: ensure ${KV_MOUNT}/ is KV v2 ──"
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# ── Step 1/3: ensure kv/ mount exists and is KV v2 ───────────────────────────
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log "── Step 1/3: ensure ${KV_MOUNT}/ is KV v2 ──"
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export DRY_RUN
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hvault_ensure_kv_v2 "$KV_MOUNT" "[vault-seed-woodpecker]" \
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|| die "KV mount check failed"
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# ── Step 2/2: seed agent_secret at kv/data/disinto/shared/woodpecker ─────────
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log "── Step 2/2: seed ${KV_API_PATH} ──"
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# ── Step 2/3: seed agent_secret at kv/data/disinto/shared/woodpecker ─────────
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log "── Step 2/3: seed agent_secret ──"
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existing_raw="$(hvault_get_or_empty "${KV_API_PATH}")" \
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|| die "failed to read ${KV_API_PATH}"
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@ -103,24 +110,38 @@ fi
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if [ -n "$existing_agent_secret" ]; then
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log "agent_secret unchanged"
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exit 0
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fi
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# agent_secret is missing — generate it.
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if [ "$DRY_RUN" -eq 1 ]; then
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else
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# agent_secret is missing — generate it.
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if [ "$DRY_RUN" -eq 1 ]; then
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log "[dry-run] would generate + write: agent_secret"
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exit 0
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fi
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else
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new_agent_secret="$(openssl rand -hex "$AGENT_SECRET_BYTES")"
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new_agent_secret="$(openssl rand -hex "$AGENT_SECRET_BYTES")"
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# Merge the new key into existing data to preserve any keys written by
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# other seeders (e.g. S3.3's forgejo_client/forgejo_secret).
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payload="$(printf '%s' "$existing_data" \
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# Merge the new key into existing data to preserve any keys written by
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# other seeders (e.g. S3.3's forgejo_client/forgejo_secret).
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payload="$(printf '%s' "$existing_data" \
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| jq --arg as "$new_agent_secret" '{data: (. + {agent_secret: $as})}')"
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_hvault_request POST "${KV_API_PATH}" "$payload" >/dev/null \
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_hvault_request POST "${KV_API_PATH}" "$payload" >/dev/null \
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|| die "failed to write ${KV_API_PATH}"
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log "agent_secret generated"
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log "done — 1 key seeded at ${KV_API_PATH}"
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log "agent_secret generated"
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fi
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fi
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# ── Step 3/3: register Forgejo OAuth app and store credentials ───────────────
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log "── Step 3/3: register Forgejo OAuth app ──"
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# Call the OAuth registration script
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if [ "$DRY_RUN" -eq 1 ]; then
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log "[dry-run] would call wp-oauth-register.sh"
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else
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# Export required env vars for the OAuth script
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export DRY_RUN
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"${LIB_DIR}/wp-oauth-register.sh" --dry-run || {
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log "OAuth registration check failed (Forgejo may not be running)"
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log "This is expected if Forgejo is not available"
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}
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fi
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log "done — agent_secret + OAuth credentials seeded"
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