mirror of
https://github.com/shankar0123/certctl.git
synced 2026-06-07 12:11:30 +00:00
shankar0123
21aeed4f4e
Phase 0 closure (Path B2, post-rewrite):
addlicense sweep — adds the canonical certctl LLC copyright + BUSL-1.1
SPDX header to every production Go file. Template:
// Copyright 2026 certctl LLC. All rights reserved.
// SPDX-License-Identifier: BUSL-1.1
Coverage: 338 / 338 production Go files (cmd/ + internal/, excluding
*_test.go and **/testdata/**). Pre-sweep coverage was 22 / 338 (6.5%);
post-sweep is 338 / 338 (100%).
Normalized 22 pre-existing legacy headers (`// Copyright (c) certctl`
+ `// SPDX-License-Identifier: BSL-1.1`) and 1 file using a
`Certctl Contributors` attribution. The legacy SPDX ID `BSL-1.1`
is non-standard; the official SPDX identifier for Business Source
License 1.1 is `BUSL-1.1` (capital U). All 338 files now share the
canonical form.
Generated via:
addlicense -c "certctl LLC" -y 2026 \
-f cowork/legal/copyright-header.tpl \
-ignore '**/testdata/**' -ignore '**/*_test.go' \
cmd/ internal/
Verification:
find cmd internal -name '*.go' -not -name '*_test.go' \
-not -path '*/testdata/*' \
-exec grep -L '^// Copyright 2026 certctl LLC' {} \; | wc -l
Returns: 0
gofmt clean. Header additions are comments only, no compile impact.
Closes: cowork/certctl-architecture-diligence-audit.html#fix-RED-4
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// Copyright 2026 certctl LLC. All rights reserved.
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// SPDX-License-Identifier: BUSL-1.1
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package service
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import (
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"crypto/ecdsa"
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"crypto/ed25519"
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"github.com/certctl-io/certctl/internal/domain"
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)
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// CSRValidationResult contains metadata extracted from a validated CSR.
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type CSRValidationResult struct {
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KeyAlgorithm string
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KeySize int
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}
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// ValidateCSRAgainstProfile parses a CSR PEM and validates that its key algorithm
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// and size comply with the profile's allowed_key_algorithms rules.
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// Returns extracted key metadata on success for storage in certificate_versions.
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func ValidateCSRAgainstProfile(csrPEM string, profile *domain.CertificateProfile) (*CSRValidationResult, error) {
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if profile == nil {
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// No profile assigned — skip validation, extract metadata only
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return extractCSRKeyInfo(csrPEM)
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}
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result, err := extractCSRKeyInfo(csrPEM)
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if err != nil {
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return nil, err
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}
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// Check that the CSR's key algorithm + size matches at least one allowed rule
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if len(profile.AllowedKeyAlgorithms) == 0 {
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// No restrictions defined — allow anything
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return result, nil
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}
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for _, rule := range profile.AllowedKeyAlgorithms {
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if rule.Algorithm == result.KeyAlgorithm && result.KeySize >= rule.MinSize {
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return result, nil
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}
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}
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return nil, fmt.Errorf("CSR key (%s %d-bit) does not match any allowed algorithm in profile %q: %v",
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result.KeyAlgorithm, result.KeySize, profile.Name, profile.AllowedKeyAlgorithms)
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}
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// extractCSRKeyInfo parses a CSR PEM and extracts the key algorithm and size.
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func extractCSRKeyInfo(csrPEM string) (*CSRValidationResult, error) {
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block, _ := pem.Decode([]byte(csrPEM))
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if block == nil {
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return nil, fmt.Errorf("failed to decode CSR PEM")
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}
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csr, err := x509.ParseCertificateRequest(block.Bytes)
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if err != nil {
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return nil, fmt.Errorf("failed to parse CSR: %w", err)
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}
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if err := csr.CheckSignature(); err != nil {
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return nil, fmt.Errorf("CSR signature verification failed: %w", err)
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}
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switch key := csr.PublicKey.(type) {
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case *rsa.PublicKey:
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return &CSRValidationResult{
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KeyAlgorithm: domain.KeyAlgorithmRSA,
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KeySize: key.N.BitLen(),
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}, nil
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case *ecdsa.PublicKey:
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return &CSRValidationResult{
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KeyAlgorithm: domain.KeyAlgorithmECDSA,
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KeySize: key.Curve.Params().BitSize,
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}, nil
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case ed25519.PublicKey:
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return &CSRValidationResult{
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KeyAlgorithm: domain.KeyAlgorithmEd25519,
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KeySize: 256, // Ed25519 is fixed 256-bit
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}, nil
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default:
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return nil, fmt.Errorf("unsupported key type in CSR: %T", csr.PublicKey)
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}
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}
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