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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "crypto/x509" | ||
| "crypto/tls" | ||
| "strings" | ||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| // CreateTLSConfig generates a TLS configuration based on the provided mode. | ||
| func CreateTLSConfig(currentMode int) *tls.Config { | ||
| if currentMode == 0 { // Pre-provisioning mode | ||
| return &tls.Config{ | ||
| InsecureSkipVerify: true, | ||
| VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error { | ||
| allowedLeafCNs := []string{ | ||
| "AMT RCFG", "AMT AuditL", "AMT WS-MAN", | ||
| "iAMT CSME IDevID RCFG", "iAMT CSME IDevID AuditL", "iAMT CSME IDevID WS-MAN", | ||
| } | ||
|
|
||
| allowedPrefixes := []string{ | ||
| "ODCA 2 CSME P", "ODCA 2 CSME", "On Die CSME", "On Die CSME P", | ||
| } | ||
|
|
||
| for i, rawCert := range rawCerts { | ||
| cert, err := x509.ParseCertificate(rawCert) | ||
| if err != nil { | ||
| log.Error("Failed to parse certificate", i, ":", err) | ||
| return err | ||
| } | ||
|
|
||
| if i == 0 { // Validate the leaf certificate | ||
| if !isAllowedLeafCN(cert.Subject.CommonName, allowedLeafCNs) { | ||
| log.Error("Leaf certificate CN is not allowed: ", cert.Subject.CommonName) | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| if i == 3 { // Check the 4th certificate (CSME ROM ODCA Certificate) | ||
| if !strings.Contains(cert.Subject.CommonName, "ROM CA") { | ||
| log.Error("4th certificate Common Name does not contain 'ROM CA'") | ||
| return err | ||
| } | ||
|
|
||
| ouFound := false | ||
| for _, ou := range cert.Issuer.OrganizationalUnit { | ||
| for _, prefix := range allowedPrefixes { | ||
| if strings.Contains(ou, prefix) { | ||
| log.Trace("Valid 4th certificate Issuer OU: ", ou) | ||
| ouFound = true | ||
| break | ||
| } | ||
| } | ||
| if ouFound { | ||
| break | ||
| } | ||
| } | ||
|
|
||
| if !ouFound { | ||
| log.Error("4th certificate Issuer OU does not contain a valid prefix") | ||
| return err | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // Default for ACM or CCM | ||
| log.Info("Setting default TLS Config for ACM/CCM mode") | ||
| return &tls.Config{ | ||
| InsecureSkipVerify: true, | ||
| } | ||
| } | ||
|
|
||
| func isAllowedLeafCN(cn string, allowedCNs []string) bool { | ||
| for _, allowed := range allowedCNs { | ||
| if cn == allowed { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } |