Package org.apache.solr.security.cert

Class CertUtil

java.lang.Object

org.apache.solr.security.cert.CertUtil

public class CertUtil
extends Object

Utility class for certificate-related operations, including extracting fields from the subject or issuer DN and SAN fields from X509 certificates.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	CertUtil.SANType	Supported SAN (Subject Alternative Name) types as defined in RFC 5280

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ISSUER_DN_PREFIX
static final String	SAN_PREFIX
static final String	SUBJECT_DN_PREFIX

Constructor Summary

Constructors

Constructor	Description
CertUtil()

Method Summary

Modifier and Type	Method	Description
static Optional<String>	extractFieldFromX500Principal(X500Principal principal, String path)	Extracts a specified field or the entire DN from an X500Principal, such as a certificate's subject or issuer.
static Optional<String>	extractFromIssuerDN(X509Certificate certificate, String path)	Extracts a specified field or the entire issuer DN from an X509 certificate.
static Optional<List<String>>	extractFromSAN(X509Certificate certificate, String path, Predicate<String> valueMatcher)	Extracts SAN (Subject Alternative Name) fields from an X509 certificate that match a specified path and predicate.
static Optional<String>	extractFromSubjectDN(X509Certificate certificate, String path)	Extracts a specified field or the entire subject DN from an X509 certificate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SUBJECT_DN_PREFIX

public static final String SUBJECT_DN_PREFIX

See Also:

• Constant Field Values

ISSUER_DN_PREFIX

public static final String ISSUER_DN_PREFIX

See Also:

• Constant Field Values

SAN_PREFIX

public static final String SAN_PREFIX

See Also:

• Constant Field Values

Constructor Details

CertUtil

public CertUtil()

Method Details

extractFieldFromX500Principal

public static Optional<String> extractFieldFromX500Principal(X500Principal principal,
 String path)

Extracts a specified field or the entire DN from an X500Principal, such as a certificate's subject or issuer. If the entire DN is returned the format would be RFC2253

Parameters:

principal - The X500Principal from which to extract information.

path - The DN field to extract, or a prefix indicating the entire DN.

Returns:

The value of the specified field, or the entire DN if just a prefix is provided.

extractFromSubjectDN

public static Optional<String> extractFromSubjectDN(X509Certificate certificate,
 String path)

Extracts a specified field or the entire subject DN from an X509 certificate.

Parameters:

certificate - The certificate from which to extract the subject DN information.

path - The path specifying the subject DN field to extract or a prefix for the entire DN.

Returns:

An Optional containing the value of the specified subject DN field or the entire DN; empty if not found.

extractFromIssuerDN

public static Optional<String> extractFromIssuerDN(X509Certificate certificate,
 String path)

Extracts a specified field or the entire issuer DN from an X509 certificate.

Parameters:

certificate - The certificate from which to extract the issuer DN information.

path - The path specifying the issuer DN field to extract or a prefix for the entire DN.

Returns:

An Optional containing the value of the specified issuer DN field or the entire DN; empty if not found.

extractFromSAN

public static Optional<List<String>> extractFromSAN(X509Certificate certificate,
 String path,
 Predicate<String> valueMatcher)
                                             throws CertificateParsingException

Extracts SAN (Subject Alternative Name) fields from an X509 certificate that match a specified path and predicate.

Parameters:

certificate - The certificate from which to extract SAN information.

path - The path specifying the SAN field to extract.

valueMatcher - A predicate to apply to each SAN value for filtering.

Returns:

An Optional containing a list of SAN values that match the specified path and predicate; empty if none found.

Throws:

CertificateParsingException - If an error occurs while parsing the certificate for SAN fields.