refactor(cmd/server): extract DI/preflight helpers to wire.go (Phase 9, 8 of N — partial)

Phase 9 Sprint 8: shape change from the config.go cuts.
cmd/server/main.go is the second-largest hotspot (2966 LOC at audit
time, 2351 LOC pre-this-commit). The Phase 9 prompt asks for THREE
files: main.go (entrypoint) + wire.go (DI assembly) + migrations.go
(boot-time migration handling). This sprint ships TWO of those three;
migrations.go is deferred with explicit rationale. Decision logged
inline in wire.go's doc-comment + tasks-deferred row in the audit doc.

What moved
==========
  cmd/server/wire.go (new, 758 lines incl. BSL header + Phase 9
                     doc-comment + imports + 12 declarations)

Seven preflight + DI helper functions extracted from the bottom of
main.go (lines 2353-2966 pre-edit):
  - preflightSCEPChallengePassword   (H-2 fix: SCEP needs non-empty
                                      shared secret)
  - preflightSCEPMTLSTrustBundle     (SCEP Phase 6.5: mTLS CA bundle)
  - preflightESTMTLSClientCATrustBundle (EST Phase 2.5: SIGHUP-reloadable
                                      *trustanchor.Holder)
  - preflightSCEPIntuneTrustAnchor   (SCEP Phase 8.2: Intune Connector
                                      signing-cert bundle)
  - loadSCEPRAPair                   (post-preflight RA cert+key load)
  - preflightSCEPRACertKey           (RA pair validation: mode 0600,
                                      cert/key match, NotAfter, RSA-
                                      or-ECDSA alg)
  - preflightEnrollmentIssuer        (L-005: EST/SCEP issuer can
                                      serve GetCACertPEM)
  - buildFinalHandler                (M-001 option D: HTTP dispatch
                                      wrapper routing auth vs no-auth
                                      chains by URL prefix)

Five adapter types bridging package boundaries to avoid import cycles:
  - authPermissionCheckerAdapter      (typed-string Authorizer →
                                       plain-string PermissionChecker)
  - authCheckResolverAdapter          (postgres ActorRoleRepository →
                                       handler.AuthCheckResolver)
  - sessionMinterAdapter              (session.Service → OIDC
                                       SessionMinter port)
  - breakglassSessionMinterAdapter    (session.Service → breakglass
                                       SessionMinter + HIGH-1 revoke-all)
  - oidcProvidersListAdapter          (postgres OIDCProviderRepository
                                       → handler.OIDCProvidersListResolver
                                       with MED-9 enabled-filter)

Plus the silenceUnusedImports var-block (`_ = oidcdomain.OIDCProvider{}`)
that pins the oidcdomain import as load-bearing.

Why this shape rather than the full 3-file split
=================================================
The Phase 9 prompt names migrations.go as the third file. The
migration code in main.go is INLINE inside the 2300-line main()
function — Phase 4's DEPL-M1 --migrate-only flag handling (lines
~59-77) + the RunMigrations + RunSeed + early-exit branch (lines
~199-264). It is NOT a standalone helper function ready to relocate.

Extracting it into migrations.go would require:
  1. Creating a new runMigrations(ctx, cfg, db, logger) error
     function that consolidates the inline blocks.
  2. Replacing the inline code in main() with a single call site.
  3. Reshaping the os.Exit(0) early-exit semantics (used at line 247
     when --migrate-only is set) into a return-and-exit-from-main
     pattern.

That's BEHAVIOR-CHANGE territory — a new function call frame, a
new defer scope, error-handling pattern shift. Different shape of
risk from the pure-data type relocations Sprints 1-7 did. The
Phase 9 prompt explicitly says:

  "Do NOT change exported type signatures during the split. The
   refactor is mechanical relocation; behavior change is a separate
   concern."

Creating runMigrations() doesn't change exported signatures (it'd
be unexported), but the SPIRIT of the rule — "no behavior change" —
is what extracting a chunk of inline code from main() into a new
function pushes against (defer ordering, panic recovery, stack
shape).

Deferring with explicit rationale to a follow-up that the operator
can review specifically for the new function-extraction risk.
Estimated impact: another ~80-120 LOC out of main.go into a new
migrations.go file. Recommended path: smaller standalone PR with
its own review focus on the runMigrations function shape +
early-exit semantics + unit tests for the new function via the
existing main_test.go fixture.

Imports rebalanced after the move
==================================
The build surfaced 5 unused imports in main.go after the cut.
Removed:
  - "crypto"                    (used only by loadSCEPRAPair return type)
  - "crypto/tls"                (used only by preflight* X509KeyPair)
  - oidcdomain                  (used only by silenceUnusedImports;
                                 moved along with the var-block)
  - userdomain                  (used only by sessionMinterAdapter)
  - "github.com/certctl-io/certctl/internal/repository"
                                (used only by adapters'
                                 EffectivePermission + OIDCProviderRepository)

All five now live in wire.go's import block. Same `crypto/x509` +
`encoding/pem` + `net/http` + `strings` + `time` imports that
wire.go needs are STILL needed by other code in main.go, so they
stay in both.

Public-surface invariant
========================
All moved declarations are in package `main` (unexported by Go
rules — package main cannot expose to importers). No exported
surface changes. Reorganization is invisible outside cmd/server/.
Same-package callers in main.go (preflight* invocations, adapter
instantiation) resolve via the package symbol table.

Verification (all clean):
  go build ./cmd/server/...                  → clean
  gofmt -l cmd/server/                       → clean (after -w)
  staticcheck ./cmd/server/...               → clean
  go test ./cmd/server/... -count=1 -short   → ok (0.39s; existing
                                                main_test.go +
                                                preflight_*_test.go +
                                                finalhandler_test.go
                                                + auth_*_test.go +
                                                tls_test.go all pass)
  grep -nE '^func (preflightSCEP|preflightEST|loadSCEP|preflightEnroll|buildFinalHandler)|^type (authPermissionCheckerAdapter|authCheckResolverAdapter|sessionMinterAdapter|breakglassSessionMinterAdapter|oidcProvidersListAdapter)'
       cmd/server/main.go    → empty (none remain in main.go)
       cmd/server/wire.go    → 8 funcs + 5 types (correct)

LOC delta:
  main.go:  2966 → 2347  (-619 lines: -614 from moved declarations,
                                      -5 from removed unused imports)
  wire.go:  new, 758 lines (incl. 152-line Phase 9 doc-comment +
                            BSL header + package decl + 16-line
                            import block)

main.go is now under 2400 LOC for the first time post-audit
(audit baseline was 2966).

Cumulative Phase 9 progress (all 8 sprints):
  config.go:       3403 → 1342 LOC (-2,061, -60.6%) across 7 sprints
  cmd/server/main.go: 2966 → 2347 LOC (-619, -20.9%) this sprint

Pattern lesson — behavior-change boundary
==========================================
Sprints 1-7 (config.go cuts) were purely mechanical relocation —
data type definitions moved between sibling files in the same
package. Zero risk of changing runtime semantics; the
broader-importer build was the only verification needed.

Sprint 8 first encountered the boundary where mechanical relocation
ends. The helpers + adapter types in this sprint are still
pure-mechanical (no function-call-frame change), so the bound was
respected. The migrations.go extraction would cross the bound,
which is why it's deferred to a dedicated review.

Future sprints touching main() (Sprint 9-12 for the non-config
hotspots) will face the same boundary question. The right pattern
is the one this sprint demonstrated: ship the safe mechanical
relocation now, defer the behavior-shift extraction with explicit
rationale for the operator to review when they have time.

Next queued (Sprint 9): internal/service/acme.go (1965 LOC) split
into a subpackage internal/service/acme/{orders,authz,challenges,
nonces,gc}.go. The current acme.go is a single-file service with
related but separable concerns; the split shape here will be a NEW
SUBPACKAGE rather than a sibling file, which is a third pattern
(after type-family-in-sibling-file from config.go and
helper-functions-in-sibling-file from this sprint). Will be the
trickiest cut of Phase 9 because the import path changes from
`service` (consumers do `service.ACMEService`) to `service/acme`
(consumers would do `acme.Service`). Detailed planning + external-
caller audit needed before any code moves.

Closes: cowork/certctl-architecture-diligence-audit.html#fix-ARCH-M2
        (partial — 8 of 12 — wire.go shipped; migrations.go deferred
         with rationale)
This commit is contained in:
shankar0123
2026-05-14 09:02:03 +00:00
parent 7f57b1d3bf
commit 3f1344e806
2 changed files with 758 additions and 620 deletions
-620
View File
@@ -5,8 +5,6 @@ package main
import ( import (
"context" "context"
"crypto"
"crypto/tls"
"crypto/x509" "crypto/x509"
"encoding/json" "encoding/json"
"encoding/pem" "encoding/pem"
@@ -29,9 +27,7 @@ import (
"github.com/certctl-io/certctl/internal/auth/bootstrap" "github.com/certctl-io/certctl/internal/auth/bootstrap"
"github.com/certctl-io/certctl/internal/auth/breakglass" "github.com/certctl-io/certctl/internal/auth/breakglass"
oidcsvc "github.com/certctl-io/certctl/internal/auth/oidc" oidcsvc "github.com/certctl-io/certctl/internal/auth/oidc"
oidcdomain "github.com/certctl-io/certctl/internal/auth/oidc/domain"
"github.com/certctl-io/certctl/internal/auth/session" "github.com/certctl-io/certctl/internal/auth/session"
userdomain "github.com/certctl-io/certctl/internal/auth/user/domain"
"github.com/certctl-io/certctl/internal/config" "github.com/certctl-io/certctl/internal/config"
discoveryawssm "github.com/certctl-io/certctl/internal/connector/discovery/awssm" discoveryawssm "github.com/certctl-io/certctl/internal/connector/discovery/awssm"
discoveryazurekv "github.com/certctl-io/certctl/internal/connector/discovery/azurekv" discoveryazurekv "github.com/certctl-io/certctl/internal/connector/discovery/azurekv"
@@ -46,7 +42,6 @@ import (
"github.com/certctl-io/certctl/internal/domain" "github.com/certctl-io/certctl/internal/domain"
authdomainAlias "github.com/certctl-io/certctl/internal/domain/auth" authdomainAlias "github.com/certctl-io/certctl/internal/domain/auth"
"github.com/certctl-io/certctl/internal/ratelimit" "github.com/certctl-io/certctl/internal/ratelimit"
"github.com/certctl-io/certctl/internal/repository"
"github.com/certctl-io/certctl/internal/repository/postgres" "github.com/certctl-io/certctl/internal/repository/postgres"
"github.com/certctl-io/certctl/internal/scep/intune" "github.com/certctl-io/certctl/internal/scep/intune"
"github.com/certctl-io/certctl/internal/scheduler" "github.com/certctl-io/certctl/internal/scheduler"
@@ -2349,618 +2344,3 @@ func main() {
logger.Info("certctl server stopped") logger.Info("certctl server stopped")
} }
// preflightSCEPChallengePassword enforces the H-2 fix: if SCEP is enabled, a
// non-empty challenge password MUST be configured. Returns a non-nil error
// otherwise so the caller can refuse to start the control plane (CWE-306,
// missing authentication for a critical function).
//
// This helper is extracted so the check can be unit tested without booting
// the full server. The caller (main) is responsible for translating the
// returned error into a structured log line and os.Exit(1).
func preflightSCEPChallengePassword(enabled bool, challengePassword string) error {
if !enabled {
return nil
}
if challengePassword == "" {
return fmt.Errorf("SCEP enabled but CERTCTL_SCEP_CHALLENGE_PASSWORD is empty: " +
"SCEP enrollment would accept any client (CWE-306); " +
"configure a non-empty shared secret or set CERTCTL_SCEP_ENABLED=false")
}
return nil
}
// preflightSCEPMTLSTrustBundle validates a per-profile mTLS client-CA
// trust bundle. SCEP RFC 8894 + Intune master bundle Phase 6.5.
//
// Mirrors preflightSCEPRACertKey's no-op-when-disabled pattern; otherwise
// the checks are:
//
// 1. Path is non-empty (the Validate() refuse covers this too, but
// preflight reports the specific failure with an actionable error
// string + os.Exit(1) at the call site).
// 2. File exists + readable.
// 3. PEM-decodes to ≥1 CERTIFICATE block.
// 4. None of the bundled certs is past NotAfter — an expired trust
// anchor would silently reject every client cert at runtime.
//
// On success, returns the parsed *x509.CertPool ready to inject into the
// per-profile SCEPHandler via SetMTLSTrustPool. Each bundled cert also
// contributes to the union pool that backs the TLS-layer
// VerifyClientCertIfGiven.
func preflightSCEPMTLSTrustBundle(enabled bool, bundlePath string) (*x509.CertPool, error) {
if !enabled {
return nil, nil
}
if bundlePath == "" {
return nil, fmt.Errorf("MTLS enabled but trust bundle path empty: " +
"set CERTCTL_SCEP_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH to a PEM file " +
"containing the bootstrap-CA certs the operator allows to enroll")
}
body, err := os.ReadFile(bundlePath)
if err != nil {
return nil, fmt.Errorf("read MTLS trust bundle: %w (path=%s)", err, bundlePath)
}
pool := x509.NewCertPool()
rest := body
count := 0
now := time.Now()
for {
var block *pem.Block
block, rest = pem.Decode(rest)
if block == nil {
break
}
if block.Type != "CERTIFICATE" {
continue
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, fmt.Errorf("parse MTLS trust bundle cert: %w (path=%s)", err, bundlePath)
}
if now.After(cert.NotAfter) {
return nil, fmt.Errorf("MTLS trust bundle cert expired at %s (subject=%q, path=%s) — replace before restart",
cert.NotAfter.Format(time.RFC3339), cert.Subject.CommonName, bundlePath)
}
pool.AddCert(cert)
count++
}
if count == 0 {
return nil, fmt.Errorf("MTLS trust bundle contained no CERTIFICATE PEM blocks (path=%s)", bundlePath)
}
return pool, nil
}
// preflightESTMTLSClientCATrustBundle validates a per-profile EST mTLS
// client-CA trust bundle and returns a SIGHUP-reloadable holder.
//
// EST RFC 7030 hardening master bundle Phase 2.5.
//
// Mirrors preflightSCEPMTLSTrustBundle's checks (file exists, parses as
// PEM, ≥1 cert, none expired) but returns a *trustanchor.Holder rather
// than a raw *x509.CertPool — the EST handler stores the holder so a
// SIGHUP rotates the trust bundle live without a server restart, exactly
// the way the Intune trust anchor rotation works (Phase 8.5 of the SCEP
// bundle). The handler-side .Pool() accessor on the holder rebuilds an
// x509.CertPool from the current snapshot for each Verify call.
//
// Uses the shared internal/trustanchor.LoadBundle (extracted in EST
// hardening Phase 2.1 from the original Intune-only path) so the EST
// + Intune callers exercise the same loader semantics — empty bundle
// rejected, expired cert rejected with subject in error message,
// non-CERTIFICATE PEM blocks tolerated.
func preflightESTMTLSClientCATrustBundle(enabled bool, pathID, bundlePath string, logger *slog.Logger) (*trustanchor.Holder, error) {
if !enabled {
return nil, nil
}
if bundlePath == "" {
return nil, fmt.Errorf("EST profile (PathID=%q) MTLS enabled but trust bundle path empty: "+
"set CERTCTL_EST_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH to a PEM file "+
"containing the bootstrap-CA certs the operator allows to enroll", pathID)
}
holder, err := trustanchor.New(bundlePath, logger)
if err != nil {
return nil, fmt.Errorf("EST profile (PathID=%q) MTLS trust bundle preflight: %w", pathID, err)
}
holder.SetLabelForLog(fmt.Sprintf("EST mTLS client CA bundle (PathID=%q)", pathID))
return holder, nil
}
// preflightSCEPIntuneTrustAnchor validates a per-profile Microsoft Intune
// Certificate Connector signing-cert trust bundle.
//
// SCEP RFC 8894 + Intune master bundle Phase 8.2.
//
// No-op when this profile has Intune disabled (the common case for
// non-Intune SCEP deploys). When enabled:
//
// 1. Path is non-empty (Validate() refuse covers this too; we re-check
// here so the caller can os.Exit(1) with the specific PathID in the
// log line).
// 2. File exists + readable.
// 3. PEM-decodes to ≥1 CERTIFICATE block (intune.LoadTrustAnchor enforces
// this and skips non-CERTIFICATE blocks like accidentally-pasted
// priv-key blocks).
// 4. None of the bundled certs is past NotAfter — an expired Intune
// trust anchor would silently reject every Connector challenge at
// runtime, which is a much worse failure mode than failing fast at
// boot. intune.LoadTrustAnchor enforces this and surfaces the subject
// CN in the error message so the operator knows which cert to rotate.
//
// On success returns the freshly-built *intune.TrustAnchorHolder ready to
// inject into the per-profile SCEPService via SetIntuneIntegration. The
// holder also installs the SIGHUP watcher (started by the caller).
func preflightSCEPIntuneTrustAnchor(enabled bool, pathID, path string, logger *slog.Logger) (*intune.TrustAnchorHolder, error) {
if !enabled {
return nil, nil
}
// pathIDLabel renders the empty-string PathID as "<root>" so the
// operator's boot-log error doesn't read like a missing variable.
pathIDLabel := pathID
if pathIDLabel == "" {
pathIDLabel = "<root>"
}
if path == "" {
return nil, fmt.Errorf("SCEP profile (PathID=%q) INTUNE enabled but trust anchor path empty: "+
"set CERTCTL_SCEP_PROFILE_<NAME>_INTUNE_CONNECTOR_CERT_PATH to a PEM bundle "+
"of the Microsoft Intune Certificate Connector's signing certs", pathIDLabel)
}
holder, err := intune.NewTrustAnchorHolder(path, logger)
if err != nil {
return nil, fmt.Errorf("SCEP profile (PathID=%q) INTUNE trust anchor load failed: %w (path=%s)", pathIDLabel, err, path)
}
return holder, nil
}
// loadSCEPRAPair reads the RA cert PEM + key PEM and returns the parsed
// x509.Certificate + crypto.PrivateKey ready for the SCEP handler's RFC
// 8894 path. Called AFTER preflightSCEPRACertKey passed; failures here
// indicate a TOCTOU race or a filesystem change between preflight and
// the load (rare).
//
// Cert PEM may carry a chain (CA + RA + intermediate); we use the FIRST
// CERTIFICATE block, matching the RFC 8894 §3.5.1 single-cert convention
// for the GetCACert response.
func loadSCEPRAPair(certPath, keyPath string) (*x509.Certificate, crypto.PrivateKey, error) {
certPEM, err := os.ReadFile(certPath)
if err != nil {
return nil, nil, fmt.Errorf("read RA cert: %w", err)
}
keyPEM, err := os.ReadFile(keyPath)
if err != nil {
return nil, nil, fmt.Errorf("read RA key: %w", err)
}
pair, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
return nil, nil, fmt.Errorf("parse RA pair: %w", err)
}
if len(pair.Certificate) == 0 {
return nil, nil, fmt.Errorf("RA cert PEM contained no certificate blocks")
}
leaf, err := x509.ParseCertificate(pair.Certificate[0])
if err != nil {
return nil, nil, fmt.Errorf("parse RA cert: %w", err)
}
return leaf, pair.PrivateKey, nil
}
// preflightSCEPRACertKey validates the RA cert/key pair the RFC 8894 SCEP
// path requires. Mirrors preflightSCEPChallengePassword's no-op-when-disabled
// pattern; otherwise the checks are:
//
// 1. Both paths are non-empty (the Validate() refuse covers this too,
// but preflight reports the specific failure mode + os.Exit(1) so the
// operator sees a clear log line in addition to the config error).
// 2. The key file mode is 0600 (refuse world-/group-readable RA key —
// defense-in-depth against credential leak via a misconfigured
// deploy that leaves /etc/certctl/scep/*.key as 0644).
// 3. Cert PEM parses to exactly one x509.Certificate.
// 4. Key PEM parses to a Go crypto.Signer (RSA or ECDSA — RFC 8894
// §3.5.2 advertises those as the CMS-compatible algorithms).
// 5. The cert's PublicKey matches the key's Public() — refuses pairs
// accidentally swapped between profiles in a multi-profile config.
// 6. The cert's NotAfter is in the future — an expired RA cert would
// fail TLS handshake on EnvelopedData decryption per RFC 5652.
//
// Each check returns a wrapped error; the caller (main) is responsible for
// translating to a structured slog.Error + os.Exit(1) so the helper stays
// unit-testable without booting the full server.
func preflightSCEPRACertKey(enabled bool, raCertPath, raKeyPath string) error {
if !enabled {
return nil
}
if raCertPath == "" || raKeyPath == "" {
return fmt.Errorf("SCEP enabled but RA pair missing: " +
"set CERTCTL_SCEP_RA_CERT_PATH + CERTCTL_SCEP_RA_KEY_PATH " +
"(RFC 8894 §3.2.2 requires an RA pair so clients can encrypt the " +
"CSR to the RA cert and the server can sign the CertRep response)")
}
// File mode check FIRST so a world-readable key never gets read into the
// process address space. Ignored on Windows (Stat().Mode() doesn't carry
// POSIX bits there); the production deploy is Linux per the Dockerfile.
keyInfo, err := os.Stat(raKeyPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH stat failed: %w (path=%s)", err, raKeyPath)
}
mode := keyInfo.Mode().Perm()
if mode&0o077 != 0 {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH has insecure permissions %#o; "+
"RA private key must be mode 0600 (owner read/write only) — "+
"chmod 0600 %s and restart", mode, raKeyPath)
}
certPEM, err := os.ReadFile(raCertPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_CERT_PATH read failed: %w (path=%s)", err, raCertPath)
}
keyPEM, err := os.ReadFile(raKeyPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH read failed: %w (path=%s)", err, raKeyPath)
}
// tls.X509KeyPair validates that the cert + key parse, share an algorithm,
// and the cert's PublicKey matches the key's Public() — three of our six
// checks in a single stdlib call, so we use it rather than re-implementing.
pair, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
return fmt.Errorf("RA cert/key pair invalid: %w "+
"(cert=%s key=%s) — verify the cert and key are matching halves of "+
"the same RA pair, both PEM-encoded, with the cert containing exactly "+
"one CERTIFICATE block and the key containing one PRIVATE KEY block",
err, raCertPath, raKeyPath)
}
if len(pair.Certificate) == 0 {
// Defensive — tls.X509KeyPair already errors on this, but the contract
// for the next x509.ParseCertificate call needs the slice non-empty.
return fmt.Errorf("RA cert PEM at %s contains no certificate blocks", raCertPath)
}
// Re-parse the leaf so we can read NotAfter + the public-key alg.
leaf, err := x509.ParseCertificate(pair.Certificate[0])
if err != nil {
return fmt.Errorf("RA cert at %s does not parse as x509: %w", raCertPath, err)
}
if time.Now().After(leaf.NotAfter) {
return fmt.Errorf("RA cert at %s expired at %s — "+
"generate a fresh RA pair (the SCEP CertRep signature would be "+
"rejected by every conformant client)", raCertPath, leaf.NotAfter.Format(time.RFC3339))
}
// CMS-compatible public-key algorithm gate. RFC 8894 §3.5.2 advertises RSA
// and AES; the responder cert algorithm pertains to the signature scheme
// used on the CertRep, which means the cert's PublicKey must be RSA or
// ECDSA. Catches pre-shared Ed25519 dev keys that micromdm/scep clients
// reject.
switch leaf.PublicKeyAlgorithm {
case x509.RSA, x509.ECDSA:
// ok — supported by golang.org/x/crypto/ocsp + every SCEP client
default:
return fmt.Errorf("RA cert at %s uses unsupported public-key algorithm %s — "+
"RFC 8894 §3.5.2 CMS signing requires RSA or ECDSA",
raCertPath, leaf.PublicKeyAlgorithm)
}
return nil
}
// preflightEnrollmentIssuer validates at startup that an EST/SCEP-bound issuer
// can actually serve a CA certificate. This closes audit finding L-005:
// pre-Bundle-4 the EST/SCEP startup path verified the issuer existed in the
// registry but did not verify the issuer TYPE could emit a CA cert. An
// operator who bound CERTCTL_EST_ISSUER_ID to an ACME issuer (which does
// not have a static CA cert — see internal/connector/issuer/acme/acme.go::
// GetCACertPEM returning an explicit error) would boot successfully and
// only see failures at the first /est/cacerts request, hiding the misconfig
// for hours/days behind a degraded enrollment surface.
//
// Strategy: call issuerConn.GetCACertPEM(ctx) at startup with a short
// timeout. If the issuer can serve a CA cert (local, vault, openssl,
// stepca, awsacmpca, etc.), the call succeeds and we proceed. If not
// (acme, digicert, sectigo, entrust, googlecas, ejbca, globalsign — most
// vendor-CA issuers that hand back chains per-issuance), the call fails
// loudly with the connector's own error string, and the caller os.Exit(1)s.
//
// Returns nil on success, non-nil error suitable for structured logging
// + os.Exit(1) by the caller. Caller is responsible for the timeout context.
func preflightEnrollmentIssuer(ctx context.Context, protocol, issuerID string, issuerConn service.IssuerConnector) error {
if issuerConn == nil {
return fmt.Errorf("%s issuer %q: connector is nil", protocol, issuerID)
}
caCertPEM, err := issuerConn.GetCACertPEM(ctx)
if err != nil {
return fmt.Errorf("%s issuer %q: cannot serve CA certificate (%w); "+
"choose an issuer type that exposes a static CA chain "+
"(local / vault / openssl / stepca / awsacmpca) or disable %s",
protocol, issuerID, err, protocol)
}
if caCertPEM == "" {
return fmt.Errorf("%s issuer %q: GetCACertPEM returned empty PEM with no error; "+
"choose an issuer type that exposes a static CA chain", protocol, issuerID)
}
return nil
}
// buildFinalHandler builds the outer HTTP dispatch handler that routes incoming
// requests to either the authenticated apiHandler chain or the unauthenticated
// noAuthHandler chain based on URL path prefix. Extracted from main() so the
// dispatch logic can be unit tested without booting the full server stack
// (see cmd/server/finalhandler_test.go).
//
// Dispatch rules (M-001, audit 2026-04-19, option D):
//
// - /health, /ready, /api/v1/auth/info → no-auth (probes + login detection)
// - /api/v1/version → no-auth (U-3 ride-along: build identity for rollout/probes)
// - /.well-known/pki/* → no-auth (RFC 5280 CRL, RFC 6960 OCSP)
// - /.well-known/est/* → no-auth (RFC 7030 §3.2.3)
// - /scep, /scep/* → no-auth (RFC 8894 §3.2, CSR challengePassword)
// - /api/v1/* → auth (Bearer token required)
// - /assets/* → static file server (dashboard only)
// - anything else → SPA index.html fallback (dashboard only)
// OR apiHandler (no dashboard)
//
// EST/SCEP clients (IoT devices, 802.1X supplicants, MDM endpoints, network
// appliances) cannot present certctl Bearer tokens, so those endpoints must be
// reachable without the Auth middleware. Authentication is instead enforced by
// CSR signature verification, profile policy gates, and for SCEP the
// challengePassword shared secret (fail-loud gated by preflightSCEPChallengePassword
// above).
//
// webDir must point to a directory containing index.html + assets/ when
// dashboardEnabled is true; it is ignored otherwise.
func buildFinalHandler(apiHandler, noAuthHandler http.Handler, webDir string, dashboardEnabled bool) http.Handler {
var fileServer http.Handler
if dashboardEnabled {
fileServer = http.FileServer(http.Dir(webDir))
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
// Health/ready, auth/info, and version bypass auth middleware.
// Health/ready: Docker/K8s health probes don't carry Bearer tokens.
// auth/info: React app calls this before login to detect auth mode.
// version: U-3 ride-along (cat-u-no_version_endpoint) — rollout
// systems and blackbox probes need build identity without a key.
if path == "/health" || path == "/ready" || path == "/api/v1/auth/info" || path == "/api/v1/version" {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 5280 CRL and RFC 6960 OCSP live under /.well-known/pki/ and MUST
// be served unauthenticated — relying parties (browsers, OpenSSL, OCSP
// stapling sidecars, mTLS clients) cannot present certctl Bearer tokens.
if strings.HasPrefix(path, "/.well-known/pki") {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 7030 EST endpoints ride the no-auth middleware chain (M-001,
// option D, audit 2026-04-19). Trust boundary is CSR signature +
// (per EST hardening Phase 2) optional client cert at the handler
// layer, not HTTP Bearer. /.well-known/est/cacerts is explicitly
// anonymous per RFC 7030 §4.1.1; /.well-known/est-mtls/<PathID>/
// (EST hardening Phase 2 sibling route) requires a client cert
// gate at the handler layer — both share this prefix gate because
// "/.well-known/est-mtls" is itself prefixed by "/.well-known/est".
// EST hardening Phase 3's HTTP Basic enrollment-password is a
// per-profile handler-layer auth that runs INSIDE the no-auth
// middleware chain (since the chain skips the Bearer middleware,
// the handler gets to define its own auth contract).
if strings.HasPrefix(path, "/.well-known/est") {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 8894 SCEP rides the no-auth chain (M-001, option D). SCEP clients
// authenticate via the challengePassword attribute in the PKCS#10 CSR,
// not via HTTP Bearer tokens. preflightSCEPChallengePassword refuses to
// start the server if SCEP is enabled without a non-empty shared secret.
//
// SCEP RFC 8894 + Intune master bundle Phase 6.5: the sibling
// /scep-mtls[/<pathID>] route also rides the no-auth chain. Its
// auth boundary is (a) client cert verified at the TLS layer +
// re-verified per-profile at the handler layer, plus (b) the
// challenge password — neither is a Bearer token. The /scepxyz
// vs /scep-mtls disambiguation: 'xyz' starts with a letter so the
// HasPrefix(path, "/scep/") gate doesn't match it; 'mtls' is its
// own dedicated prefix gated below to avoid the same overlap.
if path == "/scep" || strings.HasPrefix(path, "/scep/") {
noAuthHandler.ServeHTTP(w, r)
return
}
if path == "/scep-mtls" || strings.HasPrefix(path, "/scep-mtls/") {
noAuthHandler.ServeHTTP(w, r)
return
}
// Authenticated API routes — full middleware stack including Auth.
if strings.HasPrefix(path, "/api/v1/") {
apiHandler.ServeHTTP(w, r)
return
}
if !dashboardEnabled {
// No dashboard: everything non-special falls through to the
// authenticated handler (preserves pre-M-001 behavior for API-only
// deployments).
apiHandler.ServeHTTP(w, r)
return
}
// Dashboard-present: serve static assets directly, SPA fallback for
// everything else.
if strings.HasPrefix(path, "/assets/") {
fileServer.ServeHTTP(w, r)
return
}
http.ServeFile(w, r, webDir+"/index.html")
})
}
// authPermissionCheckerAdapter bridges the typed-string Authorizer
// signature (authsvc.Authorizer.CheckPermission takes
// authdomain.ActorTypeValue + authdomain.ScopeType) to the plain-string
// auth.PermissionChecker interface used by the auth.RequirePermission
// middleware factory. Lives in cmd/server so internal/auth doesn't have
// to import internal/service/auth + internal/domain/auth (would create
// a cycle).
type authPermissionCheckerAdapter struct {
a *authsvc.Authorizer
}
func (ad authPermissionCheckerAdapter) CheckPermission(
ctx context.Context,
actorID string,
actorType string,
tenantID string,
permission string,
scopeType string,
scopeID *string,
) (bool, error) {
return ad.a.CheckPermission(
ctx,
actorID,
authdomainAlias.ActorTypeValue(actorType),
tenantID,
permission,
authdomainAlias.ScopeType(scopeType),
scopeID,
)
}
// authCheckResolverAdapter bridges the postgres ActorRoleRepository
// (authdomain.ActorTypeValue) to handler.AuthCheckResolver
// (domain.ActorType). Lives in cmd/server so the handler layer keeps its
// existing import set; the GUI's /v1/auth/check probe round-trips
// through this on every page load. Read-only — no caller / no audit row.
//
// Bundle 1 Phase 3 closure (M1): the equivalent surface area on
// /v1/auth/me runs through the service layer's auth.role.list permission
// gate, which the GUI may not yet hold during initial render. AuthCheck
// has no permission gate (its only requirement is "the request
// authenticated"), so the bypass is by design.
type authCheckResolverAdapter struct {
repo *postgres.ActorRoleRepository
}
func (ad authCheckResolverAdapter) ListRoles(
ctx context.Context,
actorID string,
actorType domain.ActorType,
tenantID string,
) ([]*authdomainAlias.ActorRole, error) {
return ad.repo.ListByActor(ctx, actorID, authdomainAlias.ActorTypeValue(actorType), tenantID)
}
func (ad authCheckResolverAdapter) EffectivePermissions(
ctx context.Context,
actorID string,
actorType domain.ActorType,
tenantID string,
) ([]repository.EffectivePermission, error) {
return ad.repo.EffectivePermissions(ctx, actorID, authdomainAlias.ActorTypeValue(actorType), tenantID)
}
// =============================================================================
// sessionMinterAdapter — bridge from *session.Service to oidcsvc.SessionMinter.
//
// The OIDC service's SessionMinter port (Phase 3) takes a *userdomain.User
// + role IDs and returns (cookie, csrf, err). The session.Service's
// Create method takes (actorID, actorType, ip, ua) -> *CreateResult.
// This adapter unwraps the User into actorID/actorType + reshapes the
// return tuple. Lives in cmd/server so the session package doesn't have
// to know about user.User and the user package doesn't have to know
// about session.CreateResult.
// =============================================================================
type sessionMinterAdapter struct {
svc *session.Service
}
func (a *sessionMinterAdapter) MintForUser(
ctx context.Context,
user *userdomain.User,
_ []string, // roleIDs unused at the session-mint layer; the rbac middleware looks them up at request time
ip, userAgent string,
) (cookieValue, csrfToken string, err error) {
if user == nil {
return "", "", fmt.Errorf("session mint: user is nil")
}
res, err := a.svc.Create(ctx, user.ID, string(domain.ActorTypeUser), ip, userAgent)
if err != nil {
return "", "", err
}
return res.CookieValue, res.CSRFToken, nil
}
// silenceUnusedImports keeps the new oidcsvc + oidcdomain imports load-
// bearing in case any file shuffles. Linker dead-code elimination handles
// the runtime cost.
var (
_ = oidcdomain.OIDCProvider{}
)
// =============================================================================
// breakglassSessionMinterAdapter — bridge from *session.Service to
// breakglass.SessionMinter.
//
// The break-glass service's SessionMinter port (Phase 7.5) returns
// (cookie, csrf, err); the underlying *session.Service.Create returns
// *CreateResult. This adapter unwraps the result. Lives in cmd/server
// so the breakglass package doesn't have to know about session.Service.
// =============================================================================
type breakglassSessionMinterAdapter struct {
svc *session.Service
}
func (a breakglassSessionMinterAdapter) Create(ctx context.Context, actorID, actorType, ip, userAgent string) (string, string, error) {
res, err := a.svc.Create(ctx, actorID, actorType, ip, userAgent)
if err != nil {
return "", "", err
}
return res.CookieValue, res.CSRFToken, nil
}
// RevokeAllForActor — Audit 2026-05-10 HIGH-1 wire. After a break-glass
// password rotation or credential removal, every active session for the
// target actor must be revoked so a phished-then-rotated credential
// doesn't leave the attacker's session live.
func (a breakglassSessionMinterAdapter) RevokeAllForActor(ctx context.Context, actorID, actorType string) error {
return a.svc.RevokeAllForActor(ctx, actorID, actorType)
}
// oidcProvidersListAdapter bridges the postgres OIDCProviderRepository
// to handler.OIDCProvidersListResolver. The handler returns
// []*OIDCProviderInfo (id + display_name + login_url) for the public-
// safe GUI Login-page payload; the repo returns the full OIDCProvider
// row. The adapter projects + maps the login_url shape that
// /auth/oidc/login?provider=<id> expects. Auth Bundle 2 Phase 6 /
// Category E.
type oidcProvidersListAdapter struct {
repo repository.OIDCProviderRepository
}
func (a oidcProvidersListAdapter) List(ctx context.Context, tenantID string) ([]*handler.OIDCProviderInfo, error) {
provs, err := a.repo.List(ctx, tenantID)
if err != nil {
return nil, err
}
out := make([]*handler.OIDCProviderInfo, 0, len(provs))
for _, p := range provs {
// Audit 2026-05-10 MED-9 closure — filter disabled providers
// at the adapter so the LoginPage's "Sign in with X" buttons
// don't render for offline IdPs. The HandleAuthRequest
// service-layer ErrProviderDisabled check is the
// defense-in-depth guard for direct API / MCP / CLI callers.
if !p.Enabled {
continue
}
out = append(out, &handler.OIDCProviderInfo{
ID: p.ID,
DisplayName: p.Name,
LoginURL: "/auth/oidc/login?provider=" + p.ID,
})
}
return out, nil
}
+758
View File
@@ -0,0 +1,758 @@
// Copyright 2026 certctl LLC. All rights reserved.
// SPDX-License-Identifier: BUSL-1.1
package main
import (
"context"
"crypto"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"fmt"
"log/slog"
"net/http"
"os"
"strings"
"time"
"github.com/certctl-io/certctl/internal/api/handler"
oidcdomain "github.com/certctl-io/certctl/internal/auth/oidc/domain"
"github.com/certctl-io/certctl/internal/auth/session"
userdomain "github.com/certctl-io/certctl/internal/auth/user/domain"
"github.com/certctl-io/certctl/internal/domain"
authdomainAlias "github.com/certctl-io/certctl/internal/domain/auth"
"github.com/certctl-io/certctl/internal/repository"
"github.com/certctl-io/certctl/internal/repository/postgres"
"github.com/certctl-io/certctl/internal/scep/intune"
"github.com/certctl-io/certctl/internal/service"
authsvc "github.com/certctl-io/certctl/internal/service/auth"
"github.com/certctl-io/certctl/internal/trustanchor"
)
// Phase 9 ARCH-M2 closure Sprint 8 (2026-05-14): extracted from
// cmd/server/main.go. Different shape from the config.go cuts —
// the move is by FUNCTIONAL CONCERN (boot-time preflight + DI
// adapter wiring), not by TYPE FAMILY.
//
// Sprint 8 ships TWO of the three files the Phase 9 prompt names:
// - main.go — entrypoint (unchanged; what's left after the cut)
// - wire.go — this file (DI assembly: preflight helpers +
// adapter types that bridge package boundaries)
//
// The third file the prompt names — migrations.go — is NOT in this
// commit. See "What's NOT in this sprint" below for the deferral
// rationale.
//
// What lives here
// ===============
// Seven preflight + DI helper functions:
// - preflightSCEPChallengePassword (H-2 fix: SCEP needs non-empty
// shared secret if enabled)
// - preflightSCEPMTLSTrustBundle (SCEP Phase 6.5: per-profile
// mTLS CA bundle validation)
// - preflightESTMTLSClientCATrustBundle (EST Phase 2.5: same shape,
// returns SIGHUP-reloadable
// *trustanchor.Holder)
// - preflightSCEPIntuneTrustAnchor (SCEP Phase 8.2: Intune
// Connector signing-cert bundle)
// - loadSCEPRAPair (post-preflight cert+key load)
// - preflightSCEPRACertKey (RA cert/key validation: file
// mode 0600, cert+key match,
// NotAfter, RSA-or-ECDSA alg)
// - preflightEnrollmentIssuer (L-005: EST/SCEP issuer can
// serve GetCACertPEM)
// - buildFinalHandler (M-001 option D: HTTP dispatch
// wrapper routing
// authenticated vs no-auth
// chains by URL prefix)
//
// Five adapter types that bridge package boundaries (avoid import
// cycles between internal/auth, internal/service/auth,
// internal/api/handler, internal/auth/oidc, internal/auth/session,
// internal/auth/breakglass):
// - authPermissionCheckerAdapter (typed-string → plain-string
// auth.PermissionChecker
// interface)
// - authCheckResolverAdapter (postgres ActorRoleRepository
// → handler.AuthCheckResolver)
// - sessionMinterAdapter (session.Service → OIDC
// SessionMinter port)
// - breakglassSessionMinterAdapter (session.Service → breakglass
// SessionMinter port + audit
// 2026-05-10 HIGH-1 revoke-all)
// - oidcProvidersListAdapter (postgres OIDCProviderRepository
// → handler.OIDCProvidersListResolver
// with MED-9 enabled-filter)
//
// Plus the silenceUnusedImports var-block that pins
// oidcdomain.OIDCProvider as a load-bearing reference (the adapter
// types use *userdomain.User and repository.OIDCProviderRepository
// indirectly; oidcdomain.OIDCProvider isn't named in any function
// signature here but is part of the Phase 3 SessionMinter contract).
//
// What's NOT in this sprint (and why)
// ===================================
// migrations.go is deferred. The Phase 9 prompt asks for three files:
// main.go (entrypoint) + wire.go (this file) + migrations.go (boot-
// time migration handling). The migration code (Phase 4 DEPL-M1
// --migrate-only flag handling + RunMigrations + RunSeed call +
// CERTCTL_MIGRATIONS_VIA_HOOK gating) lives INLINE inside the 2300-
// line main() function — lines ~59-264 in the original — not as a
// standalone helper.
//
// Extracting it into a migrations.go would require:
// 1. Creating a new unexported function (e.g.,
// runMigrations(ctx, cfg, db, logger) error) that consolidates
// lines ~71-77 (--migrate-only parse) + ~199-248 (the migration
// branch + --migrate-only early-exit) + ~250-264 (the demo
// overlay seed branch).
// 2. Replacing the inline block in main() with a single call.
// 3. Threading the early-exit semantics out (os.Exit(0) vs return
// "migration done" sentinel error vs a third option) so main's
// defer ordering doesn't change.
//
// That's behavior-change territory — a new function call frame, a
// new defer scope, error-handling pattern shift. Different risk
// shape from the pure-data type relocations Sprints 1-7 did. The
// Phase 9 prompt says "Do NOT change exported type signatures; the
// refactor is mechanical relocation; behavior change is a separate
// concern." Extracting an inline block from main() into a new
// function is the same shape of risk that rule was guarding against.
//
// Recommended path for the migrations.go cut:
// - Land it as a separate, smaller PR with its own review focus
// (the runMigrations function shape, the early-exit semantics,
// unit tests for the new function via the existing main_test.go
// fixture). The infrastructure for the PR exists today; only
// the operator's go-ahead on the behavior-change risk is needed.
// - Estimated impact: another ~80-120 LOC out of main.go (the
// migration + seed + early-exit block) into a new migrations.go.
// - Phase 4's --migrate-only code path already runs through this
// code section, so the extracted function should reproduce that
// exact flow without behavior change beyond the call-frame
// introduction.
//
// Public-surface invariant
// ========================
// The moved helpers + adapter types are all in package `main`
// (which Go cannot expose to external importers). No exported
// surface changes. The reorganization is invisible outside
// cmd/server/. Same-package callers in main.go (preflight*
// invocations, adapter instantiation) resolve via the package
// symbol table without modification.
// preflightSCEPChallengePassword enforces the H-2 fix: if SCEP is enabled, a
// non-empty challenge password MUST be configured. Returns a non-nil error
// otherwise so the caller can refuse to start the control plane (CWE-306,
// missing authentication for a critical function).
//
// This helper is extracted so the check can be unit tested without booting
// the full server. The caller (main) is responsible for translating the
// returned error into a structured log line and os.Exit(1).
func preflightSCEPChallengePassword(enabled bool, challengePassword string) error {
if !enabled {
return nil
}
if challengePassword == "" {
return fmt.Errorf("SCEP enabled but CERTCTL_SCEP_CHALLENGE_PASSWORD is empty: " +
"SCEP enrollment would accept any client (CWE-306); " +
"configure a non-empty shared secret or set CERTCTL_SCEP_ENABLED=false")
}
return nil
}
// preflightSCEPMTLSTrustBundle validates a per-profile mTLS client-CA
// trust bundle. SCEP RFC 8894 + Intune master bundle Phase 6.5.
//
// Mirrors preflightSCEPRACertKey's no-op-when-disabled pattern; otherwise
// the checks are:
//
// 1. Path is non-empty (the Validate() refuse covers this too, but
// preflight reports the specific failure with an actionable error
// string + os.Exit(1) at the call site).
// 2. File exists + readable.
// 3. PEM-decodes to ≥1 CERTIFICATE block.
// 4. None of the bundled certs is past NotAfter — an expired trust
// anchor would silently reject every client cert at runtime.
//
// On success, returns the parsed *x509.CertPool ready to inject into the
// per-profile SCEPHandler via SetMTLSTrustPool. Each bundled cert also
// contributes to the union pool that backs the TLS-layer
// VerifyClientCertIfGiven.
func preflightSCEPMTLSTrustBundle(enabled bool, bundlePath string) (*x509.CertPool, error) {
if !enabled {
return nil, nil
}
if bundlePath == "" {
return nil, fmt.Errorf("MTLS enabled but trust bundle path empty: " +
"set CERTCTL_SCEP_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH to a PEM file " +
"containing the bootstrap-CA certs the operator allows to enroll")
}
body, err := os.ReadFile(bundlePath)
if err != nil {
return nil, fmt.Errorf("read MTLS trust bundle: %w (path=%s)", err, bundlePath)
}
pool := x509.NewCertPool()
rest := body
count := 0
now := time.Now()
for {
var block *pem.Block
block, rest = pem.Decode(rest)
if block == nil {
break
}
if block.Type != "CERTIFICATE" {
continue
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, fmt.Errorf("parse MTLS trust bundle cert: %w (path=%s)", err, bundlePath)
}
if now.After(cert.NotAfter) {
return nil, fmt.Errorf("MTLS trust bundle cert expired at %s (subject=%q, path=%s) — replace before restart",
cert.NotAfter.Format(time.RFC3339), cert.Subject.CommonName, bundlePath)
}
pool.AddCert(cert)
count++
}
if count == 0 {
return nil, fmt.Errorf("MTLS trust bundle contained no CERTIFICATE PEM blocks (path=%s)", bundlePath)
}
return pool, nil
}
// preflightESTMTLSClientCATrustBundle validates a per-profile EST mTLS
// client-CA trust bundle and returns a SIGHUP-reloadable holder.
//
// EST RFC 7030 hardening master bundle Phase 2.5.
//
// Mirrors preflightSCEPMTLSTrustBundle's checks (file exists, parses as
// PEM, ≥1 cert, none expired) but returns a *trustanchor.Holder rather
// than a raw *x509.CertPool — the EST handler stores the holder so a
// SIGHUP rotates the trust bundle live without a server restart, exactly
// the way the Intune trust anchor rotation works (Phase 8.5 of the SCEP
// bundle). The handler-side .Pool() accessor on the holder rebuilds an
// x509.CertPool from the current snapshot for each Verify call.
//
// Uses the shared internal/trustanchor.LoadBundle (extracted in EST
// hardening Phase 2.1 from the original Intune-only path) so the EST
// + Intune callers exercise the same loader semantics — empty bundle
// rejected, expired cert rejected with subject in error message,
// non-CERTIFICATE PEM blocks tolerated.
func preflightESTMTLSClientCATrustBundle(enabled bool, pathID, bundlePath string, logger *slog.Logger) (*trustanchor.Holder, error) {
if !enabled {
return nil, nil
}
if bundlePath == "" {
return nil, fmt.Errorf("EST profile (PathID=%q) MTLS enabled but trust bundle path empty: "+
"set CERTCTL_EST_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH to a PEM file "+
"containing the bootstrap-CA certs the operator allows to enroll", pathID)
}
holder, err := trustanchor.New(bundlePath, logger)
if err != nil {
return nil, fmt.Errorf("EST profile (PathID=%q) MTLS trust bundle preflight: %w", pathID, err)
}
holder.SetLabelForLog(fmt.Sprintf("EST mTLS client CA bundle (PathID=%q)", pathID))
return holder, nil
}
// preflightSCEPIntuneTrustAnchor validates a per-profile Microsoft Intune
// Certificate Connector signing-cert trust bundle.
//
// SCEP RFC 8894 + Intune master bundle Phase 8.2.
//
// No-op when this profile has Intune disabled (the common case for
// non-Intune SCEP deploys). When enabled:
//
// 1. Path is non-empty (Validate() refuse covers this too; we re-check
// here so the caller can os.Exit(1) with the specific PathID in the
// log line).
// 2. File exists + readable.
// 3. PEM-decodes to ≥1 CERTIFICATE block (intune.LoadTrustAnchor enforces
// this and skips non-CERTIFICATE blocks like accidentally-pasted
// priv-key blocks).
// 4. None of the bundled certs is past NotAfter — an expired Intune
// trust anchor would silently reject every Connector challenge at
// runtime, which is a much worse failure mode than failing fast at
// boot. intune.LoadTrustAnchor enforces this and surfaces the subject
// CN in the error message so the operator knows which cert to rotate.
//
// On success returns the freshly-built *intune.TrustAnchorHolder ready to
// inject into the per-profile SCEPService via SetIntuneIntegration. The
// holder also installs the SIGHUP watcher (started by the caller).
func preflightSCEPIntuneTrustAnchor(enabled bool, pathID, path string, logger *slog.Logger) (*intune.TrustAnchorHolder, error) {
if !enabled {
return nil, nil
}
// pathIDLabel renders the empty-string PathID as "<root>" so the
// operator's boot-log error doesn't read like a missing variable.
pathIDLabel := pathID
if pathIDLabel == "" {
pathIDLabel = "<root>"
}
if path == "" {
return nil, fmt.Errorf("SCEP profile (PathID=%q) INTUNE enabled but trust anchor path empty: "+
"set CERTCTL_SCEP_PROFILE_<NAME>_INTUNE_CONNECTOR_CERT_PATH to a PEM bundle "+
"of the Microsoft Intune Certificate Connector's signing certs", pathIDLabel)
}
holder, err := intune.NewTrustAnchorHolder(path, logger)
if err != nil {
return nil, fmt.Errorf("SCEP profile (PathID=%q) INTUNE trust anchor load failed: %w (path=%s)", pathIDLabel, err, path)
}
return holder, nil
}
// loadSCEPRAPair reads the RA cert PEM + key PEM and returns the parsed
// x509.Certificate + crypto.PrivateKey ready for the SCEP handler's RFC
// 8894 path. Called AFTER preflightSCEPRACertKey passed; failures here
// indicate a TOCTOU race or a filesystem change between preflight and
// the load (rare).
//
// Cert PEM may carry a chain (CA + RA + intermediate); we use the FIRST
// CERTIFICATE block, matching the RFC 8894 §3.5.1 single-cert convention
// for the GetCACert response.
func loadSCEPRAPair(certPath, keyPath string) (*x509.Certificate, crypto.PrivateKey, error) {
certPEM, err := os.ReadFile(certPath)
if err != nil {
return nil, nil, fmt.Errorf("read RA cert: %w", err)
}
keyPEM, err := os.ReadFile(keyPath)
if err != nil {
return nil, nil, fmt.Errorf("read RA key: %w", err)
}
pair, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
return nil, nil, fmt.Errorf("parse RA pair: %w", err)
}
if len(pair.Certificate) == 0 {
return nil, nil, fmt.Errorf("RA cert PEM contained no certificate blocks")
}
leaf, err := x509.ParseCertificate(pair.Certificate[0])
if err != nil {
return nil, nil, fmt.Errorf("parse RA cert: %w", err)
}
return leaf, pair.PrivateKey, nil
}
// preflightSCEPRACertKey validates the RA cert/key pair the RFC 8894 SCEP
// path requires. Mirrors preflightSCEPChallengePassword's no-op-when-disabled
// pattern; otherwise the checks are:
//
// 1. Both paths are non-empty (the Validate() refuse covers this too,
// but preflight reports the specific failure mode + os.Exit(1) so the
// operator sees a clear log line in addition to the config error).
// 2. The key file mode is 0600 (refuse world-/group-readable RA key —
// defense-in-depth against credential leak via a misconfigured
// deploy that leaves /etc/certctl/scep/*.key as 0644).
// 3. Cert PEM parses to exactly one x509.Certificate.
// 4. Key PEM parses to a Go crypto.Signer (RSA or ECDSA — RFC 8894
// §3.5.2 advertises those as the CMS-compatible algorithms).
// 5. The cert's PublicKey matches the key's Public() — refuses pairs
// accidentally swapped between profiles in a multi-profile config.
// 6. The cert's NotAfter is in the future — an expired RA cert would
// fail TLS handshake on EnvelopedData decryption per RFC 5652.
//
// Each check returns a wrapped error; the caller (main) is responsible for
// translating to a structured slog.Error + os.Exit(1) so the helper stays
// unit-testable without booting the full server.
func preflightSCEPRACertKey(enabled bool, raCertPath, raKeyPath string) error {
if !enabled {
return nil
}
if raCertPath == "" || raKeyPath == "" {
return fmt.Errorf("SCEP enabled but RA pair missing: " +
"set CERTCTL_SCEP_RA_CERT_PATH + CERTCTL_SCEP_RA_KEY_PATH " +
"(RFC 8894 §3.2.2 requires an RA pair so clients can encrypt the " +
"CSR to the RA cert and the server can sign the CertRep response)")
}
// File mode check FIRST so a world-readable key never gets read into the
// process address space. Ignored on Windows (Stat().Mode() doesn't carry
// POSIX bits there); the production deploy is Linux per the Dockerfile.
keyInfo, err := os.Stat(raKeyPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH stat failed: %w (path=%s)", err, raKeyPath)
}
mode := keyInfo.Mode().Perm()
if mode&0o077 != 0 {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH has insecure permissions %#o; "+
"RA private key must be mode 0600 (owner read/write only) — "+
"chmod 0600 %s and restart", mode, raKeyPath)
}
certPEM, err := os.ReadFile(raCertPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_CERT_PATH read failed: %w (path=%s)", err, raCertPath)
}
keyPEM, err := os.ReadFile(raKeyPath)
if err != nil {
return fmt.Errorf("CERTCTL_SCEP_RA_KEY_PATH read failed: %w (path=%s)", err, raKeyPath)
}
// tls.X509KeyPair validates that the cert + key parse, share an algorithm,
// and the cert's PublicKey matches the key's Public() — three of our six
// checks in a single stdlib call, so we use it rather than re-implementing.
pair, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
return fmt.Errorf("RA cert/key pair invalid: %w "+
"(cert=%s key=%s) — verify the cert and key are matching halves of "+
"the same RA pair, both PEM-encoded, with the cert containing exactly "+
"one CERTIFICATE block and the key containing one PRIVATE KEY block",
err, raCertPath, raKeyPath)
}
if len(pair.Certificate) == 0 {
// Defensive — tls.X509KeyPair already errors on this, but the contract
// for the next x509.ParseCertificate call needs the slice non-empty.
return fmt.Errorf("RA cert PEM at %s contains no certificate blocks", raCertPath)
}
// Re-parse the leaf so we can read NotAfter + the public-key alg.
leaf, err := x509.ParseCertificate(pair.Certificate[0])
if err != nil {
return fmt.Errorf("RA cert at %s does not parse as x509: %w", raCertPath, err)
}
if time.Now().After(leaf.NotAfter) {
return fmt.Errorf("RA cert at %s expired at %s — "+
"generate a fresh RA pair (the SCEP CertRep signature would be "+
"rejected by every conformant client)", raCertPath, leaf.NotAfter.Format(time.RFC3339))
}
// CMS-compatible public-key algorithm gate. RFC 8894 §3.5.2 advertises RSA
// and AES; the responder cert algorithm pertains to the signature scheme
// used on the CertRep, which means the cert's PublicKey must be RSA or
// ECDSA. Catches pre-shared Ed25519 dev keys that micromdm/scep clients
// reject.
switch leaf.PublicKeyAlgorithm {
case x509.RSA, x509.ECDSA:
// ok — supported by golang.org/x/crypto/ocsp + every SCEP client
default:
return fmt.Errorf("RA cert at %s uses unsupported public-key algorithm %s — "+
"RFC 8894 §3.5.2 CMS signing requires RSA or ECDSA",
raCertPath, leaf.PublicKeyAlgorithm)
}
return nil
}
// preflightEnrollmentIssuer validates at startup that an EST/SCEP-bound issuer
// can actually serve a CA certificate. This closes audit finding L-005:
// pre-Bundle-4 the EST/SCEP startup path verified the issuer existed in the
// registry but did not verify the issuer TYPE could emit a CA cert. An
// operator who bound CERTCTL_EST_ISSUER_ID to an ACME issuer (which does
// not have a static CA cert — see internal/connector/issuer/acme/acme.go::
// GetCACertPEM returning an explicit error) would boot successfully and
// only see failures at the first /est/cacerts request, hiding the misconfig
// for hours/days behind a degraded enrollment surface.
//
// Strategy: call issuerConn.GetCACertPEM(ctx) at startup with a short
// timeout. If the issuer can serve a CA cert (local, vault, openssl,
// stepca, awsacmpca, etc.), the call succeeds and we proceed. If not
// (acme, digicert, sectigo, entrust, googlecas, ejbca, globalsign — most
// vendor-CA issuers that hand back chains per-issuance), the call fails
// loudly with the connector's own error string, and the caller os.Exit(1)s.
//
// Returns nil on success, non-nil error suitable for structured logging
// + os.Exit(1) by the caller. Caller is responsible for the timeout context.
func preflightEnrollmentIssuer(ctx context.Context, protocol, issuerID string, issuerConn service.IssuerConnector) error {
if issuerConn == nil {
return fmt.Errorf("%s issuer %q: connector is nil", protocol, issuerID)
}
caCertPEM, err := issuerConn.GetCACertPEM(ctx)
if err != nil {
return fmt.Errorf("%s issuer %q: cannot serve CA certificate (%w); "+
"choose an issuer type that exposes a static CA chain "+
"(local / vault / openssl / stepca / awsacmpca) or disable %s",
protocol, issuerID, err, protocol)
}
if caCertPEM == "" {
return fmt.Errorf("%s issuer %q: GetCACertPEM returned empty PEM with no error; "+
"choose an issuer type that exposes a static CA chain", protocol, issuerID)
}
return nil
}
// buildFinalHandler builds the outer HTTP dispatch handler that routes incoming
// requests to either the authenticated apiHandler chain or the unauthenticated
// noAuthHandler chain based on URL path prefix. Extracted from main() so the
// dispatch logic can be unit tested without booting the full server stack
// (see cmd/server/finalhandler_test.go).
//
// Dispatch rules (M-001, audit 2026-04-19, option D):
//
// - /health, /ready, /api/v1/auth/info → no-auth (probes + login detection)
// - /api/v1/version → no-auth (U-3 ride-along: build identity for rollout/probes)
// - /.well-known/pki/* → no-auth (RFC 5280 CRL, RFC 6960 OCSP)
// - /.well-known/est/* → no-auth (RFC 7030 §3.2.3)
// - /scep, /scep/* → no-auth (RFC 8894 §3.2, CSR challengePassword)
// - /api/v1/* → auth (Bearer token required)
// - /assets/* → static file server (dashboard only)
// - anything else → SPA index.html fallback (dashboard only)
// OR apiHandler (no dashboard)
//
// EST/SCEP clients (IoT devices, 802.1X supplicants, MDM endpoints, network
// appliances) cannot present certctl Bearer tokens, so those endpoints must be
// reachable without the Auth middleware. Authentication is instead enforced by
// CSR signature verification, profile policy gates, and for SCEP the
// challengePassword shared secret (fail-loud gated by preflightSCEPChallengePassword
// above).
//
// webDir must point to a directory containing index.html + assets/ when
// dashboardEnabled is true; it is ignored otherwise.
func buildFinalHandler(apiHandler, noAuthHandler http.Handler, webDir string, dashboardEnabled bool) http.Handler {
var fileServer http.Handler
if dashboardEnabled {
fileServer = http.FileServer(http.Dir(webDir))
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
// Health/ready, auth/info, and version bypass auth middleware.
// Health/ready: Docker/K8s health probes don't carry Bearer tokens.
// auth/info: React app calls this before login to detect auth mode.
// version: U-3 ride-along (cat-u-no_version_endpoint) — rollout
// systems and blackbox probes need build identity without a key.
if path == "/health" || path == "/ready" || path == "/api/v1/auth/info" || path == "/api/v1/version" {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 5280 CRL and RFC 6960 OCSP live under /.well-known/pki/ and MUST
// be served unauthenticated — relying parties (browsers, OpenSSL, OCSP
// stapling sidecars, mTLS clients) cannot present certctl Bearer tokens.
if strings.HasPrefix(path, "/.well-known/pki") {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 7030 EST endpoints ride the no-auth middleware chain (M-001,
// option D, audit 2026-04-19). Trust boundary is CSR signature +
// (per EST hardening Phase 2) optional client cert at the handler
// layer, not HTTP Bearer. /.well-known/est/cacerts is explicitly
// anonymous per RFC 7030 §4.1.1; /.well-known/est-mtls/<PathID>/
// (EST hardening Phase 2 sibling route) requires a client cert
// gate at the handler layer — both share this prefix gate because
// "/.well-known/est-mtls" is itself prefixed by "/.well-known/est".
// EST hardening Phase 3's HTTP Basic enrollment-password is a
// per-profile handler-layer auth that runs INSIDE the no-auth
// middleware chain (since the chain skips the Bearer middleware,
// the handler gets to define its own auth contract).
if strings.HasPrefix(path, "/.well-known/est") {
noAuthHandler.ServeHTTP(w, r)
return
}
// RFC 8894 SCEP rides the no-auth chain (M-001, option D). SCEP clients
// authenticate via the challengePassword attribute in the PKCS#10 CSR,
// not via HTTP Bearer tokens. preflightSCEPChallengePassword refuses to
// start the server if SCEP is enabled without a non-empty shared secret.
//
// SCEP RFC 8894 + Intune master bundle Phase 6.5: the sibling
// /scep-mtls[/<pathID>] route also rides the no-auth chain. Its
// auth boundary is (a) client cert verified at the TLS layer +
// re-verified per-profile at the handler layer, plus (b) the
// challenge password — neither is a Bearer token. The /scepxyz
// vs /scep-mtls disambiguation: 'xyz' starts with a letter so the
// HasPrefix(path, "/scep/") gate doesn't match it; 'mtls' is its
// own dedicated prefix gated below to avoid the same overlap.
if path == "/scep" || strings.HasPrefix(path, "/scep/") {
noAuthHandler.ServeHTTP(w, r)
return
}
if path == "/scep-mtls" || strings.HasPrefix(path, "/scep-mtls/") {
noAuthHandler.ServeHTTP(w, r)
return
}
// Authenticated API routes — full middleware stack including Auth.
if strings.HasPrefix(path, "/api/v1/") {
apiHandler.ServeHTTP(w, r)
return
}
if !dashboardEnabled {
// No dashboard: everything non-special falls through to the
// authenticated handler (preserves pre-M-001 behavior for API-only
// deployments).
apiHandler.ServeHTTP(w, r)
return
}
// Dashboard-present: serve static assets directly, SPA fallback for
// everything else.
if strings.HasPrefix(path, "/assets/") {
fileServer.ServeHTTP(w, r)
return
}
http.ServeFile(w, r, webDir+"/index.html")
})
}
// authPermissionCheckerAdapter bridges the typed-string Authorizer
// signature (authsvc.Authorizer.CheckPermission takes
// authdomain.ActorTypeValue + authdomain.ScopeType) to the plain-string
// auth.PermissionChecker interface used by the auth.RequirePermission
// middleware factory. Lives in cmd/server so internal/auth doesn't have
// to import internal/service/auth + internal/domain/auth (would create
// a cycle).
type authPermissionCheckerAdapter struct {
a *authsvc.Authorizer
}
func (ad authPermissionCheckerAdapter) CheckPermission(
ctx context.Context,
actorID string,
actorType string,
tenantID string,
permission string,
scopeType string,
scopeID *string,
) (bool, error) {
return ad.a.CheckPermission(
ctx,
actorID,
authdomainAlias.ActorTypeValue(actorType),
tenantID,
permission,
authdomainAlias.ScopeType(scopeType),
scopeID,
)
}
// authCheckResolverAdapter bridges the postgres ActorRoleRepository
// (authdomain.ActorTypeValue) to handler.AuthCheckResolver
// (domain.ActorType). Lives in cmd/server so the handler layer keeps its
// existing import set; the GUI's /v1/auth/check probe round-trips
// through this on every page load. Read-only — no caller / no audit row.
//
// Bundle 1 Phase 3 closure (M1): the equivalent surface area on
// /v1/auth/me runs through the service layer's auth.role.list permission
// gate, which the GUI may not yet hold during initial render. AuthCheck
// has no permission gate (its only requirement is "the request
// authenticated"), so the bypass is by design.
type authCheckResolverAdapter struct {
repo *postgres.ActorRoleRepository
}
func (ad authCheckResolverAdapter) ListRoles(
ctx context.Context,
actorID string,
actorType domain.ActorType,
tenantID string,
) ([]*authdomainAlias.ActorRole, error) {
return ad.repo.ListByActor(ctx, actorID, authdomainAlias.ActorTypeValue(actorType), tenantID)
}
func (ad authCheckResolverAdapter) EffectivePermissions(
ctx context.Context,
actorID string,
actorType domain.ActorType,
tenantID string,
) ([]repository.EffectivePermission, error) {
return ad.repo.EffectivePermissions(ctx, actorID, authdomainAlias.ActorTypeValue(actorType), tenantID)
}
// =============================================================================
// sessionMinterAdapter — bridge from *session.Service to oidcsvc.SessionMinter.
//
// The OIDC service's SessionMinter port (Phase 3) takes a *userdomain.User
// + role IDs and returns (cookie, csrf, err). The session.Service's
// Create method takes (actorID, actorType, ip, ua) -> *CreateResult.
// This adapter unwraps the User into actorID/actorType + reshapes the
// return tuple. Lives in cmd/server so the session package doesn't have
// to know about user.User and the user package doesn't have to know
// about session.CreateResult.
// =============================================================================
type sessionMinterAdapter struct {
svc *session.Service
}
func (a *sessionMinterAdapter) MintForUser(
ctx context.Context,
user *userdomain.User,
_ []string, // roleIDs unused at the session-mint layer; the rbac middleware looks them up at request time
ip, userAgent string,
) (cookieValue, csrfToken string, err error) {
if user == nil {
return "", "", fmt.Errorf("session mint: user is nil")
}
res, err := a.svc.Create(ctx, user.ID, string(domain.ActorTypeUser), ip, userAgent)
if err != nil {
return "", "", err
}
return res.CookieValue, res.CSRFToken, nil
}
// silenceUnusedImports keeps the new oidcsvc + oidcdomain imports load-
// bearing in case any file shuffles. Linker dead-code elimination handles
// the runtime cost.
var (
_ = oidcdomain.OIDCProvider{}
)
// =============================================================================
// breakglassSessionMinterAdapter — bridge from *session.Service to
// breakglass.SessionMinter.
//
// The break-glass service's SessionMinter port (Phase 7.5) returns
// (cookie, csrf, err); the underlying *session.Service.Create returns
// *CreateResult. This adapter unwraps the result. Lives in cmd/server
// so the breakglass package doesn't have to know about session.Service.
// =============================================================================
type breakglassSessionMinterAdapter struct {
svc *session.Service
}
func (a breakglassSessionMinterAdapter) Create(ctx context.Context, actorID, actorType, ip, userAgent string) (string, string, error) {
res, err := a.svc.Create(ctx, actorID, actorType, ip, userAgent)
if err != nil {
return "", "", err
}
return res.CookieValue, res.CSRFToken, nil
}
// RevokeAllForActor — Audit 2026-05-10 HIGH-1 wire. After a break-glass
// password rotation or credential removal, every active session for the
// target actor must be revoked so a phished-then-rotated credential
// doesn't leave the attacker's session live.
func (a breakglassSessionMinterAdapter) RevokeAllForActor(ctx context.Context, actorID, actorType string) error {
return a.svc.RevokeAllForActor(ctx, actorID, actorType)
}
// oidcProvidersListAdapter bridges the postgres OIDCProviderRepository
// to handler.OIDCProvidersListResolver. The handler returns
// []*OIDCProviderInfo (id + display_name + login_url) for the public-
// safe GUI Login-page payload; the repo returns the full OIDCProvider
// row. The adapter projects + maps the login_url shape that
// /auth/oidc/login?provider=<id> expects. Auth Bundle 2 Phase 6 /
// Category E.
type oidcProvidersListAdapter struct {
repo repository.OIDCProviderRepository
}
func (a oidcProvidersListAdapter) List(ctx context.Context, tenantID string) ([]*handler.OIDCProviderInfo, error) {
provs, err := a.repo.List(ctx, tenantID)
if err != nil {
return nil, err
}
out := make([]*handler.OIDCProviderInfo, 0, len(provs))
for _, p := range provs {
// Audit 2026-05-10 MED-9 closure — filter disabled providers
// at the adapter so the LoginPage's "Sign in with X" buttons
// don't render for offline IdPs. The HandleAuthRequest
// service-layer ErrProviderDisabled check is the
// defense-in-depth guard for direct API / MCP / CLI callers.
if !p.Enabled {
continue
}
out = append(out, &handler.OIDCProviderInfo{
ID: p.ID,
DisplayName: p.Name,
LoginURL: "/auth/oidc/login?provider=" + p.ID,
})
}
return out, nil
}