mirror of
https://github.com/shankar0123/certctl.git
synced 2026-06-07 20:51:30 +00:00
shankar0123
52248be717
Breaking change release. Plaintext HTTP listener removed. The certctl control plane now terminates TLS 1.3 on :8443 via http.Server.ListenAndServeTLS. No CERTCTL_TLS_ENABLED=false escape hatch. No dual-listener mode. One-step cutover per docs/upgrade-to-tls.md. Server - cmd/server/tls.go: certHolder with SIGHUP hot-reload + atomic cert swap, buildServerTLSConfig (TLS 1.3 min, GetCertificate callback), preflightServerTLS validation - cmd/server/main.go: ListenAndServeTLS in place of ListenAndServe, watchSIGHUP wiring, cert/key path config threading - tls_test.go: 418-line regression coverage of reload, preflight, callback behavior, SAN validation Config - CERTCTL_TLS_CERT_PATH / CERTCTL_TLS_KEY_PATH (required) - Plaintext rejection: agents/CLI/MCP pre-flight-fail on http:// URLs with a pointer to docs/upgrade-to-tls.md Agents, CLI, MCP - All three pre-flight-reject http:// URLs with fail-loud diagnostic - CERTCTL_SERVER_CA_BUNDLE_PATH for private-CA trust - CERTCTL_SERVER_TLS_INSECURE_SKIP_VERIFY for dev-only bypass (loud warning on startup) - install-agent.sh emits both vars as commented template lines docker-compose - certctl-tls-init sidecar generates SAN-valid self-signed cert into deploy/test/certs/ on first boot - All demo-stack curls pin against ca.crt with --cacert Helm chart - Three TLS provisioning modes, exactly one required: - server.tls.existingSecret (operator-supplied) - server.tls.certManager.enabled (cert-manager integration) - server.tls.selfSigned.enabled (eval only — not for production) - server-certificate.yaml template for cert-manager mode - helm install without a TLS source fails at template render with a pointer to docs/tls.md CI - .github/workflows/ci.yml Helm Chart Validation step renders the chart in both existingSecret and cert-manager modes, plus an inverse guard-regression test that asserts helm template MUST refuse to render when no TLS source is configured. Previously the single `helm template` invocation hit the certctl.tls.required fail-loud guard and exit-1'd CI. Four invocations now: lint (existingSecret), template (existingSecret), template (cert-manager), template (no args — must fail). Integration tests - deploy/test/integration_test.go stands up the Compose stack over HTTPS, extracts the CA bundle, and exercises every certctl API over https://localhost:8443 - All 34 integration subtests green (per Phase 8 local CI-parity) Documentation - New: docs/tls.md (provisioning patterns, rotation, SIGHUP reload) - New: docs/upgrade-to-tls.md (one-step cutover, no-downgrade warnings, fleet-roll sequencing) - CHANGELOG.md: v2.2.0 "HTTPS Everywhere — The Irony" entry (file heading unchanged; release tag is v2.0.47) - All curls in docs/, examples/, deploy/helm/ guides use https://localhost:8443 --cacert Verification - grep -rn "ListenAndServe[^T]" cmd/ internal/ → 0 hits - grep -rn "\"http://" cmd/ internal/ → 2 benign hits (Caddy admin API default, SSRF doc comment) — zero certctl endpoints - Tasks #197–#206 (Phases 0–8) all closed in the tracker Files: 65 changed, 3489 insertions, 372 deletions (pre-CI-fix).
88 lines
2.7 KiB
Go
88 lines
2.7 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"net/url"
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"os"
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"os/signal"
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"strings"
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gomcp "github.com/modelcontextprotocol/go-sdk/mcp"
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"github.com/shankar0123/certctl/internal/mcp"
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)
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// Version is set at build time via -ldflags.
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var Version = "dev"
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func main() {
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// HTTPS-Everywhere (v2.2): the server is HTTPS-only. The default URL
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// uses https://; plaintext http:// is rejected by validateHTTPSScheme
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// below with a fail-loud pre-flight diagnostic pointing at
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// docs/upgrade-to-tls.md, so operators never get a TCP-refused or
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// TLS-handshake-error downstream. See docs/tls.md for CA bundle and
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// insecure-skip-verify guidance.
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serverURL := os.Getenv("CERTCTL_SERVER_URL")
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if serverURL == "" {
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serverURL = "https://localhost:8443"
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}
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if err := validateHTTPSScheme(serverURL); err != nil {
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fmt.Fprintf(os.Stderr, "Error: %v\n", err)
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fmt.Fprintf(os.Stderr, "\nThe certctl control plane is HTTPS-only as of v2.2.\n")
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fmt.Fprintf(os.Stderr, "See docs/upgrade-to-tls.md for the cutover walkthrough.\n")
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os.Exit(1)
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}
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apiKey := os.Getenv("CERTCTL_API_KEY")
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caBundlePath := os.Getenv("CERTCTL_SERVER_CA_BUNDLE_PATH")
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insecure := strings.EqualFold(os.Getenv("CERTCTL_SERVER_TLS_INSECURE_SKIP_VERIFY"), "true")
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client, err := mcp.NewClient(serverURL, apiKey, caBundlePath, insecure)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error: %v\n", err)
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os.Exit(1)
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}
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server := gomcp.NewServer(&gomcp.Implementation{
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Name: "certctl",
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Version: Version,
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}, nil)
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mcp.RegisterTools(server, client)
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
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defer stop()
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fmt.Fprintf(os.Stderr, "certctl MCP server %s (backend: %s)\n", Version, serverURL)
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if err := server.Run(ctx, &gomcp.StdioTransport{}); err != nil {
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log.Fatalf("MCP server error: %v", err)
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}
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}
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// validateHTTPSScheme rejects plaintext and empty-scheme server URLs at
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// startup so operators get a fail-loud diagnostic before any network call,
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// not a TCP-refused or TLS-handshake-error downstream. See docs/upgrade-to-tls.md.
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func validateHTTPSScheme(serverURL string) error {
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if serverURL == "" {
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return fmt.Errorf("server URL is empty — set CERTCTL_SERVER_URL to an https:// URL (e.g., https://certctl-server:8443)")
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}
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u, err := url.Parse(serverURL)
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if err != nil {
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return fmt.Errorf("server URL %q is not a valid URL: %w", serverURL, err)
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}
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switch strings.ToLower(u.Scheme) {
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case "https":
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return nil
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case "http":
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return fmt.Errorf("server URL %q uses plaintext http:// — the certctl control plane is HTTPS-only", serverURL)
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case "":
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return fmt.Errorf("server URL %q is missing a scheme — expected https://", serverURL)
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default:
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return fmt.Errorf("server URL %q uses unsupported scheme %q — expected https://", serverURL, u.Scheme)
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}
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}
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