fd0c7493c3
CrowdSec LAPI already issues `captcha`-type decisions for lower-severity abuse (http-429-abuse, http-403-abuse, http-crawl-non_statics, http-sensitive-files), but the Traefik bouncer plugin had no captcha provider configured — so those decisions silently fell through to a 403 ban (traced in the plugin's bouncer.go @ v1.4.2: captchaClient.Valid==false => handleBanServeHTTP). Flagged users had no way to self-unblock, contradicting the profile's stated intent. Wire Cloudflare Turnstile as the bouncer's captcha provider so a captcha decision now renders a solvable challenge instead of a hard block: - New cloudflare_turnstile_widget.crowdsec_captcha (managed mode), scoped to viktorbarzin.me so one widget covers every subdomain the bouncer fronts. Mirrors the existing Forgejo-signup Turnstile pattern; sitekey + secret are passed into the traefik module. - middleware.tf: captchaProvider=turnstile + site/secret keys + grace 1800s + captchaHTMLFilePath=/captcha/captcha.html. - Vendor the plugin's captcha.html and mount it into the Traefik container at /captcha via the chart `volumes` value — the pulled Yaegi plugin does not expose its bundled template to Traefik. - docs/architecture/security.md: document the ban-vs-captcha remediation split. - Remove the dead crowdsec-ingress-bouncer.yaml (unused nginx bouncer with placeholder reCAPTCHA keys; referenced by zero .tf). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
52 lines
2.5 KiB
HCL
52 lines
2.5 KiB
HCL
variable "tls_secret_name" { type = string }
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variable "redis_host" { type = string }
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data "vault_kv_secret_v2" "secrets" {
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mount = "secret"
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name = "platform"
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}
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# x402 wallet lives under secret/viktor (Viktor's personal config) — not
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# secret/platform — and is the only field this stack needs from there.
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data "vault_kv_secret_v2" "viktor" {
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mount = "secret"
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name = "viktor"
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}
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# Cloudflare Turnstile widget backing the CrowdSec captcha remediation. When
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# LAPI issues a `captcha` decision (rate-limit / 403 / crawl / sensitive-file
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# abuse — the captcha_remediation profile in stacks/crowdsec .../values.yaml),
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# the Traefik bouncer plugin serves this widget so flagged users can
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# self-unblock instead of getting a hard 403 (which is what happened before:
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# the plugin had no captcha provider, so captcha decisions fell through to ban).
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# Scoped to the registrable domain — a Turnstile hostname covers its subdomains,
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# so one widget works on every *.viktorbarzin.me app the bouncer fronts.
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# Same IaC pattern as stacks/forgejo/turnstile.tf; the CF Global API Key
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# (cloudflare_provider.tf) has account-wide Turnstile access. The widget secret
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# is sensitive and lands in TF state (Tier-1 PG, encrypted) — same trust level
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# as the CrowdSec LAPI key already passed into the bouncer middleware.
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data "cloudflare_accounts" "main" {}
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resource "cloudflare_turnstile_widget" "crowdsec_captcha" {
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account_id = data.cloudflare_accounts.main.accounts[0].id
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name = "crowdsec-captcha"
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domains = ["viktorbarzin.me"]
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# "managed" = Cloudflare adaptively decides whether to show an interactive
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# challenge; lowest friction for real users, strong against bots.
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mode = "managed"
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}
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module "traefik" {
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source = "./modules/traefik"
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tier = local.tiers.core
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crowdsec_api_key = data.vault_kv_secret_v2.secrets.data["ingress_crowdsec_api_key"]
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captcha_site_key = cloudflare_turnstile_widget.crowdsec_captcha.id
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captcha_secret_key = cloudflare_turnstile_widget.crowdsec_captcha.secret
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redis_host = var.redis_host
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tls_secret_name = var.tls_secret_name
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auth_fallback_htpasswd = data.vault_kv_secret_v2.secrets.data["auth_fallback_htpasswd"]
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x402_wallet_address = lookup(data.vault_kv_secret_v2.viktor.data, "x402_wallet_address", "")
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# Reuses the existing Alertmanager Slack incoming webhook — same channel as
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# other infra alerts. Payment events arrive as a normal Slack message.
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x402_notify_webhook_url = lookup(data.vault_kv_secret_v2.viktor.data, "alertmanager_slack_api_url", "")
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}
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