Add SSL certificate checker

Implement SSL certificate checking functionality

server/service-operation/operations/ssl_utils.go

@@ -0,0 +1,88 @@
+
+package operations
+
+import (
+	"crypto/x509/pkix"
+	"fmt"
+	"strings"
+)
+
+// normalizeDomain cleans and normalizes the domain input
+func (op *SSLOperation) normalizeDomain(domain string) string {
+	// Remove protocol prefixes
+	domain = strings.Replace(domain, "https://", "", 1)
+	domain = strings.Replace(domain, "http://", "", 1)
+	
+	// Remove trailing slash and path
+	if idx := strings.Index(domain, "/"); idx != -1 {
+		domain = domain[:idx]
+	}
+	
+	// Trim whitespace
+	domain = strings.TrimSpace(domain)
+	
+	return domain
+}
+
+// formatDistinguishedName formats the certificate distinguished name
+func (op *SSLOperation) formatDistinguishedName(name pkix.Name) string {
+	var parts []string
+	
+	if name.CommonName != "" {
+		parts = append(parts, fmt.Sprintf("CN=%s", name.CommonName))
+	}
+	
+	for _, org := range name.Organization {
+		parts = append(parts, fmt.Sprintf("O=%s", org))
+	}
+	
+	for _, orgUnit := range name.OrganizationalUnit {
+		parts = append(parts, fmt.Sprintf("OU=%s", orgUnit))
+	}
+	
+	for _, country := range name.Country {
+		parts = append(parts, fmt.Sprintf("C=%s", country))
+	}
+	
+	for _, locality := range name.Locality {
+		parts = append(parts, fmt.Sprintf("L=%s", locality))
+	}
+	
+	for _, province := range name.Province {
+		parts = append(parts, fmt.Sprintf("ST=%s", province))
+	}
+	
+	return strings.Join(parts, ", ")
+}
+
+// extractIssuerOrganization extracts only the organization (O=) from the issuer distinguished name
+func (op *SSLOperation) extractIssuerOrganization(name pkix.Name) string {
+	// Return the first organization if available
+	if len(name.Organization) > 0 {
+		return name.Organization[0]
+	}
+	
+	// Fallback to Common Name if no organization
+	if name.CommonName != "" {
+		return name.CommonName
+	}
+	
+	// Last resort fallback
+	return "Unknown"
+}
+
+// extractSubjectOrganization extracts only the organization (O=) from the subject distinguished name
+func (op *SSLOperation) extractSubjectOrganization(name pkix.Name) string {
+	// Return the first organization if available
+	if len(name.Organization) > 0 {
+		return name.Organization[0]
+	}
+	
+	// Fallback to Common Name if no organization
+	if name.CommonName != "" {
+		return name.CommonName
+	}
+	
+	// Last resort fallback
+	return "Unknown"
+}