Support different encoding types in certificate.get_encoding()

src/libstrongswan/credentials/certificates/certificate.h

@@ -28,6 +28,7 @@ typedef enum cert_validation_t cert_validation_t;
 #include <library.h>
 #include <utils/identification.h>
 #include <credentials/keys/public_key.h>
+#include <credentials/cred_encoding.h>
 
 /**
  * Kind of a certificate_t
@@ -163,11 +164,14 @@ struct certificate_t {
 						 time_t *not_before, time_t *not_after);
 
 	/**
-	 * Get the certificate in an encoded form.
+	 * Get the certificate in an encoded form as a chunk.
 	 *
-	 * @return				allocated chunk of encoded cert
+	 * @param type		type of the encoding, one of CERT_*
+	 * @param encoding	encoding of the key, allocated
+	 * @return			TRUE if encoding supported
 	 */
-	chunk_t (*get_encoding)(certificate_t *this);
+	bool (*get_encoding)(certificate_t *this, cred_encoding_type_t type,
+						 chunk_t *encoding);
 
 	/**
 	 * Check if two certificates are equal.

src/libstrongswan/credentials/cred_encoding.h

@@ -86,6 +86,13 @@ enum cred_encoding_type_t {
 	PUBKEY_PGP,
 	PRIVKEY_PGP,
 
+	/** ASN.1 DER encoded certificate */
+	CERT_ASN1_DER,
+	/** PEM encoded certificate */
+	CERT_PEM,
+	/** PGP Packet encoded certificate */
+	CERT_PGP_PKT,
+
 	CRED_ENCODING_MAX,
 };
 
@@ -117,6 +124,20 @@ enum cred_encoding_part_t {
 	CRED_PART_ECDSA_PUB_ASN1_DER,
 	/** a DER encoded ECDSA private key */
 	CRED_PART_ECDSA_PRIV_ASN1_DER,
+	/** a DER encoded X509 certificate */
+	CRED_PART_X509_ASN1_DER,
+	/** a DER encoded X509 CRL */
+	CRED_PART_X509_CRL_ASN1_DER,
+	/** a DER encoded X509 OCSP request */
+	CRED_PART_X509_OCSP_REQ_ASN1_DER,
+	/** a DER encoded X509 OCSP response */
+	CRED_PART_X509_OCSP_RES_ASN1_DER,
+	/** a DER encoded X509 attribute certificate */
+	CRED_PART_X509_AC_ASN1_DER,
+	/** a DER encoded PKCS10 certificate request */
+	CRED_PART_PKCS10_ASN1_DER,
+	/** a PGP encoded certificate */
+	CRED_PART_PGP_CERT,
 
 	CRED_PART_END,
 };