[crypto] Use x509_name() in validator debug messages

Display a human-readable certificate name in validator debug messages
wherever possible.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/net/validator.c

 			 size_t len );
 };
 
+/**
+ * Get validator name (for debug messages)
+ *
+ * @v validator		Certificate validator
+ * @ret name		Validator name
+ */
+static const char * validator_name ( struct validator *validator ) {
+
+	/* Use name of first certificate in chain */
+	return x509_name ( x509_first ( validator->chain ) );
+}
+
 /**
  * Free certificate validator
  *
 	struct validator *validator =
 		container_of ( refcnt, struct validator, refcnt );
 
-	DBGC2 ( validator, "VALIDATOR %p freed\n", validator );
+	DBGC2 ( validator, "VALIDATOR %p \"%s\" freed\n",
+		validator, validator_name ( validator ) );
 	x509_chain_put ( validator->chain );
 	ocsp_put ( validator->ocsp );
 	xferbuf_free ( &validator->buffer );
 
 	/* Enter certificateSet */
 	if ( ( rc = asn1_enter ( &cursor, ASN1_SET ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not enter "
-		       "certificateSet: %s\n", validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not enter "
+		       "certificateSet: %s\n", validator,
+		       validator_name ( validator ), strerror ( rc ) );
 		goto err_certificateset;
 	}
 
 		/* Add certificate to chain */
 		if ( ( rc = x509_append_raw ( certs, cursor.data,
 					      cursor.len ) ) != 0 ) {
-			DBGC ( validator, "VALIDATOR %p could not append "
-			       "certificate: %s\n",
-			       validator, strerror ( rc) );
+			DBGC ( validator, "VALIDATOR %p \"%s\" could not "
+			       "append certificate: %s\n", validator,
+			       validator_name ( validator ), strerror ( rc) );
 			DBGC_HDA ( validator, 0, cursor.data, cursor.len );
 			return rc;
 		}
 		cert = x509_last ( certs );
-		DBGC ( validator, "VALIDATOR %p found certificate %s\n",
-		       validator, x509_name ( cert ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" found certificate ",
+		       validator, validator_name ( validator ) );
+		DBGC ( validator, "%s\n", x509_name ( cert ) );
 
 		/* Move to next certificate */
 		asn1_skip_any ( &cursor );
 	/* Append certificates to chain */
 	last = x509_last ( validator->chain );
 	if ( ( rc = x509_auto_append ( validator->chain, certs ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not append "
-		       "certificates: %s\n", validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not append "
+		       "certificates: %s\n", validator,
+		       validator_name ( validator ), strerror ( rc ) );
 		goto err_auto_append;
 	}
 
 	/* Check that at least one certificate has been added */
 	if ( last == x509_last ( validator->chain ) ) {
-		DBGC ( validator, "VALIDATOR %p failed to append any "
-		       "applicable certificates\n", validator );
+		DBGC ( validator, "VALIDATOR %p \"%s\" failed to append any "
+		       "applicable certificates\n", validator,
+		       validator_name ( validator ) );
 		rc = -EACCES;
 		goto err_no_progress;
 	}
  * Start download of cross-signing certificate
  *
  * @v validator		Certificate validator
- * @v issuer		Required issuer
+ * @v cert		X.509 certificate
  * @ret rc		Return status code
  */
 static int validator_start_download ( struct validator *validator,
-				      const struct asn1_cursor *issuer ) {
+				      struct x509_certificate *cert ) {
+	const struct asn1_cursor *issuer = &cert->issuer.raw;
 	const char *crosscert;
 	char *crosscert_copy;
 	char *uri_string;
 			 crosscert, crc );
 	base64_encode ( issuer->data, issuer->len, ( uri_string + len ),
 			( uri_string_len - len ) );
-	DBGC ( validator, "VALIDATOR %p downloading cross-signed certificate "
-	       "from %s\n", validator, uri_string );
+	DBGC ( validator, "VALIDATOR %p \"%s\" downloading ",
+	       validator, validator_name ( validator ) );
+	DBGC ( validator, "\"%s\" cross-signature from %s\n",
+	       x509_name ( cert ), uri_string );
 
 	/* Set completion handler */
 	validator->done = validator_append;
 	/* Open URI */
 	if ( ( rc = xfer_open_uri_string ( &validator->xfer,
 					   uri_string ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not open %s: %s\n",
-		       validator, uri_string, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not open %s: "
+		       "%s\n", validator, validator_name ( validator ),
+		       uri_string, strerror ( rc ) );
 		goto err_open_uri_string;
 	}
 
 
 	/* Record OCSP response */
 	if ( ( rc = ocsp_response ( validator->ocsp, data, len ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not record OCSP "
-		       "response: %s\n", validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not record OCSP "
+		       "response: %s\n", validator,
+		       validator_name ( validator ),strerror ( rc ) );
 		return rc;
 	}
 
 	/* Validate OCSP response */
 	now = time ( NULL );
 	if ( ( rc = ocsp_validate ( validator->ocsp, now ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not validate OCSP "
-		       "response: %s\n", validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not validate "
+		       "OCSP response: %s\n", validator,
+		       validator_name ( validator ), strerror ( rc ) );
 		return rc;
 	}
 
 	/* Create OCSP check */
 	assert ( validator->ocsp == NULL );
 	if ( ( rc = ocsp_check ( cert, issuer, &validator->ocsp ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not create OCSP check: "
-		       "%s\n", validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not create OCSP "
+		       "check: %s\n", validator, validator_name ( validator ),
+		       strerror ( rc ) );
 		return rc;
 	}
 
 
 	/* Open URI */
 	uri_string = validator->ocsp->uri_string;
-	DBGC ( validator, "VALIDATOR %p performing OCSP check at %s\n",
-	       validator, uri_string );
+	DBGC ( validator, "VALIDATOR %p \"%s\" checking ",
+	       validator, validator_name ( validator ) );
+	DBGC ( validator, "\"%s\" via %s\n",
+	       x509_name ( cert ), uri_string );
 	if ( ( rc = xfer_open_uri_string ( &validator->xfer,
 					   uri_string ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not open %s: %s\n",
-		       validator, uri_string, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not open %s: "
+		       "%s\n", validator, validator_name ( validator ),
+		       uri_string, strerror ( rc ) );
 		return rc;
 	}
 
 
 	/* Check for errors */
 	if ( rc != 0 ) {
-		DBGC ( validator, "VALIDATOR %p transfer failed: %s\n",
-		       validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" transfer failed: %s\n",
+		       validator, validator_name ( validator ),
+		       strerror ( rc ) );
 		goto err_transfer;
 	}
-	DBGC2 ( validator, "VALIDATOR %p transfer complete\n", validator );
+	DBGC2 ( validator, "VALIDATOR %p \"%s\" transfer complete\n",
+		validator, validator_name ( validator ) );
 
 	/* Process completed download */
 	assert ( validator->done != NULL );
 	/* Add data to buffer */
 	if ( ( rc = xferbuf_deliver ( &validator->buffer, iob_disown ( iobuf ),
 				      meta ) ) != 0 ) {
-		DBGC ( validator, "VALIDATOR %p could not receive data: %s\n",
-		       validator, strerror ( rc ) );
+		DBGC ( validator, "VALIDATOR %p \"%s\" could not receive "
+		       "data: %s\n", validator, validator_name ( validator ),
+		       strerror ( rc ) );
 		validator_finished ( validator, rc );
 		return rc;
 	}
 	now = time ( NULL );
 	if ( ( rc = x509_validate_chain ( validator->chain, now, NULL,
 					  NULL ) ) == 0 ) {
+		DBGC ( validator, "VALIDATOR %p \"%s\" validated\n",
+		       validator, validator_name ( validator ) );
 		validator_finished ( validator, 0 );
 		return;
 	}
 	/* Otherwise, try to download a suitable cross-signing
 	 * certificate.
 	 */
-	if ( ( rc = validator_start_download ( validator,
-					       &last->issuer.raw ) ) != 0 ) {
+	if ( ( rc = validator_start_download ( validator, last ) ) != 0 ) {
 		validator_finished ( validator, rc );
 		return;
 	}
 	/* Attach parent interface, mortalise self, and return */
 	intf_plug_plug ( &validator->job, job );
 	ref_put ( &validator->refcnt );
-	DBGC2 ( validator, "VALIDATOR %p validating X509 chain %p\n",
-		validator, validator->chain );
+	DBGC2 ( validator, "VALIDATOR %p \"%s\" validating X509 chain %p\n",
+		validator, validator_name ( validator ), validator->chain );
 	return 0;
 
 	validator_finished ( validator, rc );