iis,wincertstore,javakeystore: SHA-256 idempotency short-circuit

Closes Top-10 fix #3 of the 2026-05-02 deployment-target audit
re-run (see cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md). Pre-fix, the three PowerShell-driven connectors
(IIS / WinCertStore / JavaKeystore) bypass internal/deploy.Apply
because they write to the Windows cert store / Java keystore via
PowerShell + keytool rather than the local filesystem. They don't
get deploy.Apply's SHA-256 idempotency short-circuit for free, so
every renewal triggers a full Remove+Import cycle even on byte-
identical material. Operators with 60-day rotation see unnecessary
cert-store / keystore churn, briefly bumping CPU and possibly
disrupting connections in flight.

This commit adds a per-connector idempotency probe modeled on
Bundle 9's Caddy api-mode SHA-256 short-circuit (commit 08a86d3).
Each probe runs at the top of DeployCertificate, BEFORE the
destructive step, with a unique # CERTCTL_IDEM_PROBE PowerShell
comment tag so test mocks match deterministically.

IIS: Get-ChildItem Cert:\... + Get-WebBinding; matches when both
the cert is in the store AND the active binding's certificateHash
equals the new thumbprint.

WinCertStore: Get-ChildItem Cert:\...\<thumbprint>; matches when
the cert exists in the configured store AND its NotAfter is
still in the future.

JavaKeystore: keytool -list -alias -v; matches when the parsed
SHA-256 fingerprint equals sha256(certPEM_DER).

On match: return Success=true with Metadata["idempotent"]="true",
no destructive operation. On any error during the probe (network,
parse, etc.): fall through to today's full deploy path.
False negatives are safe; false positives are dangerous.

Tests added (one positive + one negative per connector):
- TestIIS_Idempotent_SkipsDeployWhenBindingMatches
- TestIIS_Idempotent_DifferentBinding_FallsThroughToDeploy
- TestWinCertStore_Idempotent_SkipsImportWhenCertInStore
- TestWinCertStore_Idempotent_NotInStore_FallsThroughToDeploy
- TestJKS_Idempotent_SkipsDeployWhenAliasMatches
- TestJKS_Idempotent_DifferentAlias_FallsThroughToDeploy

Verified locally:
- gofmt clean across all three connectors.
- Syntax-validated via gofmt.

Audit reference: cowork/deployment-target-audit-2026-05-02-rerun/
RESULTS.md Top-10 fix #3.
This commit is contained in:
shankar0123
2026-05-02 22:01:30 +00:00
parent c26cef37a1
commit 4142837cac
6 changed files with 786 additions and 118 deletions
@@ -197,10 +197,12 @@ func TestDeployCertificate_Success(t *testing.T) {
t.Fatalf("generate cert: %v", err)
}
// Bundle 7: success path runs 3 PowerShell scripts in order:
// snapshot → import → cleanup. Seed responses for each.
// Bundle 10: idempotency probe runs first (returns IDEM_MISS by default),
// then Bundle 7: success path runs 3 PowerShell scripts in order:
// probe → snapshot → import → cleanup. Seed responses for each.
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"TEMPDIR:/tmp/certctl-snapshot-abc",
"SUCCESS:AABBCCDD",
"CLEANUP_OK",
@@ -228,22 +230,131 @@ func TestDeployCertificate_Success(t *testing.T) {
t.Errorf("expected store_name metadata 'My', got: %s", result.Metadata["store_name"])
}
// Bundle 7: 3 scripts on success path (snapshot + import + cleanup).
if len(mock.scripts) != 3 {
t.Fatalf("expected 3 script calls (snapshot + import + cleanup), got %d", len(mock.scripts))
// Bundle 10: 4 scripts on success path (probe + snapshot + import + cleanup).
if len(mock.scripts) != 4 {
t.Fatalf("expected 4 script calls (probe + snapshot + import + cleanup), got %d", len(mock.scripts))
}
if !strings.Contains(mock.scripts[0], "# CERTCTL_SNAPSHOT") {
t.Errorf("expected # CERTCTL_SNAPSHOT in first script, got: %s", mock.scripts[0])
if !strings.Contains(mock.scripts[0], "# CERTCTL_IDEM_PROBE") {
t.Errorf("expected # CERTCTL_IDEM_PROBE in first script, got: %s", mock.scripts[0])
}
importScript := mock.scripts[1]
if !strings.Contains(mock.scripts[1], "# CERTCTL_SNAPSHOT") {
t.Errorf("expected # CERTCTL_SNAPSHOT in second script, got: %s", mock.scripts[1])
}
importScript := mock.scripts[2]
if !strings.Contains(importScript, "Import-PfxCertificate") {
t.Error("expected Import-PfxCertificate in second script")
t.Error("expected Import-PfxCertificate in third script")
}
if !strings.Contains(importScript, "Cert:\\LocalMachine\\My") {
t.Error("expected correct cert store path in second script")
t.Error("expected correct cert store path in third script")
}
if !strings.Contains(mock.scripts[2], "# CERTCTL_CLEANUP") {
t.Errorf("expected # CERTCTL_CLEANUP in third script, got: %s", mock.scripts[2])
if !strings.Contains(mock.scripts[3], "# CERTCTL_CLEANUP") {
t.Errorf("expected # CERTCTL_CLEANUP in fourth script, got: %s", mock.scripts[3])
}
}
func TestWinCertStore_Idempotent_SkipsImportWhenCertInStore(t *testing.T) {
certPEM, keyPEM, err := generateTestCertAndKey()
if err != nil {
t.Fatalf("generate cert: %v", err)
}
// Probe returns IDEM_MATCH
mock := &mockExecutor{
responses: []string{"IDEM_MATCH"},
}
c := NewWithExecutor(&Config{
StoreName: "My",
StoreLocation: "LocalMachine",
}, testLogger(), mock)
result, err := c.DeployCertificate(context.Background(), target.DeploymentRequest{
CertPEM: certPEM,
KeyPEM: keyPEM,
})
if err != nil {
t.Fatalf("deploy failed: %v", err)
}
if !result.Success {
t.Error("expected success=true")
}
// Verify idempotent flag is set
if result.Metadata["idempotent"] != "true" {
t.Errorf("expected idempotent=true, got %s", result.Metadata["idempotent"])
}
// Only the probe should have run (1 script call)
if len(mock.scripts) != 1 {
t.Errorf("expected 1 script call (probe only), got %d", len(mock.scripts))
}
if !strings.Contains(mock.scripts[0], "# CERTCTL_IDEM_PROBE") {
t.Errorf("expected probe script, got: %s", mock.scripts[0])
}
// Verify no Import-PfxCertificate call
for i, script := range mock.scripts {
if strings.Contains(script, "Import-PfxCertificate") {
t.Errorf("script %d should not contain Import-PfxCertificate (idempotent short-circuit): %s", i, script)
}
}
}
func TestWinCertStore_Idempotent_NotInStore_FallsThroughToDeploy(t *testing.T) {
certPEM, keyPEM, err := generateTestCertAndKey()
if err != nil {
t.Fatalf("generate cert: %v", err)
}
// Probe returns IDEM_MISS, then standard snapshot + import + cleanup responses
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"TEMPDIR:/tmp/certctl-snapshot-def",
"SUCCESS:DDEEFFGG",
"CLEANUP_OK",
},
}
c := NewWithExecutor(&Config{
StoreName: "My",
StoreLocation: "LocalMachine",
}, testLogger(), mock)
result, err := c.DeployCertificate(context.Background(), target.DeploymentRequest{
CertPEM: certPEM,
KeyPEM: keyPEM,
})
if err != nil {
t.Fatalf("deploy failed: %v", err)
}
if !result.Success {
t.Error("expected success=true")
}
// Verify idempotent flag is NOT set
if result.Metadata["idempotent"] != "" {
t.Errorf("expected no idempotent flag, got %s", result.Metadata["idempotent"])
}
// Full flow: probe + snapshot + import + cleanup = 4 scripts
if len(mock.scripts) != 4 {
t.Errorf("expected 4 script calls (probe, snapshot, import, cleanup), got %d", len(mock.scripts))
}
// Verify probe ran first
if !strings.Contains(mock.scripts[0], "# CERTCTL_IDEM_PROBE") {
t.Errorf("expected probe as first script, got: %s", mock.scripts[0])
}
// Verify import happened
hasImport := false
for _, script := range mock.scripts {
if strings.Contains(script, "Import-PfxCertificate") {
hasImport = true
break
}
}
if !hasImport {
t.Error("expected Import-PfxCertificate in scripts")
}
}
@@ -279,16 +390,18 @@ func TestDeployCertificate_ImportFailed(t *testing.T) {
t.Fatalf("generate cert: %v", err)
}
// Bundle 7: snapshot returns empty (no thumbprints in store) → import
// fails → rollback runs (and succeeds since snapshot was empty, only
// removes the new cert if it landed). Mock seeds 3 responses.
// Bundle 10 / Top-10 fix #3 idempotency probe runs first → IDEM_MISS,
// fall through. Bundle 7: snapshot returns empty → import fails →
// rollback runs (and succeeds since snapshot was empty, only removes
// the new cert if it landed).
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"TEMPDIR:/tmp/certctl-snapshot-xyz",
"Access denied",
"ROLLBACK_OK",
},
errors: []error{nil, fmt.Errorf("exit code 1"), nil},
errors: []error{nil, nil, fmt.Errorf("exit code 1"), nil},
}
c := NewWithExecutor(&Config{}, testLogger(), mock)
@@ -314,6 +427,7 @@ func TestDeployCertificate_WithFriendlyName(t *testing.T) {
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"TEMPDIR:/tmp/certctl-snapshot-fn",
"SUCCESS:AABB",
"CLEANUP_OK",
@@ -331,11 +445,11 @@ func TestDeployCertificate_WithFriendlyName(t *testing.T) {
if err != nil {
t.Fatalf("deploy failed: %v", err)
}
// Bundle 7: import script is now mock.scripts[1] (snapshot is [0]).
if len(mock.scripts) < 2 {
t.Fatalf("expected at least 2 scripts (snapshot + import), got %d", len(mock.scripts))
// Bundle 10: probe at [0], snapshot at [1], import at [2].
if len(mock.scripts) < 3 {
t.Fatalf("expected at least 3 scripts (probe + snapshot + import), got %d", len(mock.scripts))
}
if !strings.Contains(mock.scripts[1], "FriendlyName") {
if !strings.Contains(mock.scripts[2], "FriendlyName") {
t.Error("expected FriendlyName in import script")
}
}
@@ -348,6 +462,7 @@ func TestDeployCertificate_WithRemoveExpired(t *testing.T) {
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"TEMPDIR:/tmp/certctl-snapshot-re",
"SUCCESS:AABB",
"CLEANUP_OK",
@@ -365,11 +480,11 @@ func TestDeployCertificate_WithRemoveExpired(t *testing.T) {
if err != nil {
t.Fatalf("deploy failed: %v", err)
}
// Bundle 7: import script is mock.scripts[1].
if len(mock.scripts) < 2 {
t.Fatalf("expected at least 2 scripts (snapshot + import), got %d", len(mock.scripts))
// Bundle 10: probe at [0], snapshot at [1], import at [2].
if len(mock.scripts) < 3 {
t.Fatalf("expected at least 3 scripts (probe + snapshot + import), got %d", len(mock.scripts))
}
if !strings.Contains(mock.scripts[1], "Remove-Item") {
if !strings.Contains(mock.scripts[2], "Remove-Item") {
t.Error("expected Remove-Item for expired cert cleanup in import script")
}
}
@@ -392,16 +507,17 @@ func TestWinCertStore_ImportFails_RemovesNewCert_RestoresOldFromSnapshot(t *test
t.Fatalf("generate cert: %v", err)
}
// Snapshot finds one same-Subject cert and exports it.
// Import fails. Rollback succeeds. Verify confirms.
// Probe → IDEM_MISS, fall through. Snapshot finds one same-Subject
// cert and exports it. Import fails. Rollback succeeds. Verify confirms.
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"SNAPSHOT:OLDTHUMB123:/tmp/certctl-snapshot-abc/OLDTHUMB123.pfx\nTEMPDIR:/tmp/certctl-snapshot-abc",
"PFX import error",
"ROLLBACK_OK",
"VERIFY_OK",
},
errors: []error{nil, fmt.Errorf("exit code 1"), nil, nil},
errors: []error{nil, nil, fmt.Errorf("exit code 1"), nil, nil},
}
c := NewWithExecutor(&Config{
StoreName: "My",
@@ -428,9 +544,9 @@ func TestWinCertStore_ImportFails_RemovesNewCert_RestoresOldFromSnapshot(t *test
t.Errorf("expected error to mention 'rolled back', got: %v", err)
}
// 4 scripts: snapshot + import + rollback + verify.
if len(mock.scripts) != 4 {
t.Fatalf("expected 4 scripts (snapshot + import + rollback + verify), got %d", len(mock.scripts))
// 5 scripts: probe + snapshot + import + rollback + verify.
if len(mock.scripts) != 5 {
t.Fatalf("expected 5 scripts (probe + snapshot + import + rollback + verify), got %d", len(mock.scripts))
}
// Locate the rollback script and assert it contains BOTH a Remove-Item
@@ -467,17 +583,19 @@ func TestWinCertStore_ImportFails_NoExistingSameSubject_RemovesNewCertOnly(t *te
t.Fatalf("generate cert: %v", err)
}
// Snapshot returns THUMB lines (different-Subject certs in store) but
// NO SNAPSHOT lines — no same-Subject cert was exported. Rollback
// removes the new cert but does NOT call Import-PfxCertificate.
// Probe → IDEM_MISS, fall through. Snapshot returns THUMB lines
// (different-Subject certs in store) but NO SNAPSHOT lines — no
// same-Subject cert was exported. Rollback removes the new cert but
// does NOT call Import-PfxCertificate.
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"THUMB:UNRELATED1\nTHUMB:UNRELATED2\nTEMPDIR:/tmp/certctl-snapshot-noss",
"PFX import error",
"ROLLBACK_OK",
"VERIFY_OK",
},
errors: []error{nil, fmt.Errorf("exit code 1"), nil, nil},
errors: []error{nil, nil, fmt.Errorf("exit code 1"), nil, nil},
}
c := NewWithExecutor(&Config{
StoreName: "My",
@@ -524,12 +642,13 @@ func TestWinCertStore_FriendlyNameFails_NewCertRemoved_OldCertsRestored(t *testi
// failed (FriendlyName, Get-ChildItem verify, RemoveExpired).
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"SNAPSHOT:OLDTHUMB456:/tmp/certctl-snapshot-fn/OLDTHUMB456.pfx\nTEMPDIR:/tmp/certctl-snapshot-fn",
"Cannot set FriendlyName: invalid character in friendly name",
"ROLLBACK_OK",
"VERIFY_OK",
},
errors: []error{nil, fmt.Errorf("Set-ItemProperty failed"), nil, nil},
errors: []error{nil, nil, fmt.Errorf("Set-ItemProperty failed"), nil, nil},
}
c := NewWithExecutor(&Config{
StoreName: "My",
@@ -581,16 +700,18 @@ func TestWinCertStore_ImportFails_RollbackAlsoFails_OperatorActionable(t *testin
t.Fatalf("generate cert: %v", err)
}
// Snapshot succeeds; import fails; rollback ALSO fails. Operator-
// actionable case: both errors must be surfaced + metadata flags
// manual_action_required.
// Probe → IDEM_MISS, fall through. Snapshot succeeds; import fails;
// rollback ALSO fails. Operator-actionable case: both errors must be
// surfaced + metadata flags manual_action_required.
mock := &mockExecutor{
responses: []string{
"IDEM_MISS",
"SNAPSHOT:OLDTHUMB789:/tmp/certctl-snapshot-rbf/OLDTHUMB789.pfx\nTEMPDIR:/tmp/certctl-snapshot-rbf",
"Import error",
"Rollback step failed",
},
errors: []error{
nil,
nil,
fmt.Errorf("import-step exit code 1"),
fmt.Errorf("rollback-step exit code 2"),