/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0.  If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

/*
 * Portions copyright (c) 2008 Nominet UK.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* pkcs11-list [-P] [-m module] [-s slot] [-i $id | -l $label] [-p $pin] */

/*! \file */

#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

#include <isc/commandline.h>
#include <isc/print.h>
#include <isc/result.h>
#include <isc/types.h>

#include <pk11/pk11.h>
#include <pk11/result.h>

int
main(int argc, char *argv[]) {
	isc_result_t result;
	CK_RV rv;
	CK_SLOT_ID slot = 0;
	CK_SESSION_HANDLE hSession;
	CK_BYTE attr_id[2];
	CK_OBJECT_HANDLE akey[50];
	pk11_context_t pctx;
	char *lib_name = NULL;
	char *label = NULL;
	char *pin = NULL;
	bool error = false, logon = true, all = false;
	unsigned int i = 0, id = 0;
	int c, errflg = 0;
	CK_ULONG ulObjectCount;
	CK_ATTRIBUTE search_template[] = { { CKA_ID, &attr_id,
					     sizeof(attr_id) } };

	while ((c = isc_commandline_parse(argc, argv, ":m:s:i:l:p:P")) != -1) {
		switch (c) {
		case 'P':
			logon = false;
			break;
		case 'm':
			lib_name = isc_commandline_argument;
			break;
		case 's':
			slot = atoi(isc_commandline_argument);
			break;
		case 'i':
			id = atoi(isc_commandline_argument);
			id &= 0xffff;
			break;
		case 'l':
			label = isc_commandline_argument;
			break;
		case 'p':
			pin = isc_commandline_argument;
			break;
		case ':':
			fprintf(stderr, "Option -%c requires an operand\n",
				isc_commandline_option);
			errflg++;
			break;
		case '?':
		default:
			fprintf(stderr, "Unrecognised option: -%c\n",
				isc_commandline_option);
			errflg++;
		}
	}

	if (errflg) {
		fprintf(stderr, "Usage:\n");
		fprintf(stderr, "\tpkcs11-list [-P] [-m module] [-s slot] "
				"[-i id | -l label] [-p pin]\n");
		exit(1);
	}

	if (!id && (label == NULL)) {
		all = true;
	}

	if (slot) {
		printf("slot %lu\n", slot);
	}

	if (id) {
		printf("id %u\n", id);
		attr_id[0] = (id >> 8) & 0xff;
		attr_id[1] = id & 0xff;
	} else if (label != NULL) {
		printf("label %s\n", label);
		search_template[0].type = CKA_LABEL;
		search_template[0].pValue = label;
		search_template[0].ulValueLen = strlen(label);
	}

	pk11_result_register();

	/* Initialize the CRYPTOKI library */
	if (lib_name != NULL) {
		pk11_set_lib_name(lib_name);
	}

	if (logon && pin == NULL) {
		pin = getpass("Enter Pin: ");
	}

	result = pk11_get_session(&pctx, OP_ANY, false, false, logon, pin,
				  slot);
	if (result == PK11_R_NORANDOMSERVICE ||
	    result == PK11_R_NODIGESTSERVICE || result == PK11_R_NOAESSERVICE)
	{
		fprintf(stderr, "Warning: %s\n", isc_result_totext(result));
		fprintf(stderr, "This HSM will not work with BIND 9 "
				"using native PKCS#11.\n");
	} else if (result != ISC_R_SUCCESS) {
		fprintf(stderr,
			"Unrecoverable error initializing "
			"PKCS#11: %s\n",
			isc_result_totext(result));
		fprintf(stderr,
			"Unrecoverable error initializing "
			"PKCS#11: %s\n",
			isc_result_totext(result));
		exit(1);
	}

	if (pin != NULL) {
		memset(pin, 0, strlen(pin));
	}

	hSession = pctx.session;

	rv = pkcs_C_FindObjectsInit(hSession, search_template, all ? 0 : 1);
	if (rv != CKR_OK) {
		fprintf(stderr, "C_FindObjectsInit: Error = 0x%.8lX\n", rv);
		error = 1;
		goto exit_session;
	}

	ulObjectCount = 1;
	while (ulObjectCount) {
		rv = pkcs_C_FindObjects(hSession, akey, 50, &ulObjectCount);
		if (rv != CKR_OK) {
			fprintf(stderr, "C_FindObjects: Error = 0x%.8lX\n", rv);
			error = 1;
			goto exit_search;
		}
		for (i = 0; i < ulObjectCount; i++) {
			unsigned int j, len;

			CK_OBJECT_CLASS oclass = 0;
			CK_BYTE labelbuf[64 + 1];
			CK_BYTE idbuf[64];
			CK_BBOOL extract = TRUE;
			CK_BBOOL never = FALSE;
			CK_ATTRIBUTE template[] = {
				{ CKA_CLASS, &oclass, sizeof(oclass) },
				{ CKA_LABEL, labelbuf, sizeof(labelbuf) - 1 },
				{ CKA_ID, idbuf, sizeof(idbuf) }
			};
			CK_ATTRIBUTE priv_template[] = {
				{ CKA_EXTRACTABLE, &extract, sizeof(extract) },
				{ CKA_NEVER_EXTRACTABLE, &never, sizeof(never) }
			};

			memset(labelbuf, 0, sizeof(labelbuf));
			memset(idbuf, 0, sizeof(idbuf));

			rv = pkcs_C_GetAttributeValue(hSession, akey[i],
						      template, 3);
			if (rv != CKR_OK) {
				fprintf(stderr,
					"C_GetAttributeValue[%u]: "
					"rv = 0x%.8lX\n",
					i, rv);
				if (rv == CKR_BUFFER_TOO_SMALL) {
					fprintf(stderr,
						"%u too small: %lu %lu %lu\n",
						i, template[0].ulValueLen,
						template[1].ulValueLen,
						template[2].ulValueLen);
				}
				error = 1;
				continue;
			}

			len = template[2].ulValueLen;
			printf("object[%u]: handle %lu class %lu "
			       "label[%lu] '%s' id[%lu] ",
			       i, akey[i], oclass, template[1].ulValueLen,
			       labelbuf, template[2].ulValueLen);
			if (len == 2) {
				id = (idbuf[0] << 8) & 0xff00;
				id |= idbuf[1] & 0xff;
				printf("%u", id);
			} else {
				if (len > 8) {
					len = 8;
				}
				if (len > 0) {
					printf("0x");
				}
				for (j = 0; j < len; j++) {
					printf("%02x", idbuf[j]);
				}
				if (template[2].ulValueLen > len) {
					printf("...");
				}
			}
			if ((oclass == CKO_PRIVATE_KEY ||
			     oclass == CKO_SECRET_KEY) &&
			    pkcs_C_GetAttributeValue(hSession, akey[i],
						     priv_template,
						     2) == CKR_OK)
			{
				printf(" E:%s",
				       extract ? "true"
					       : (never ? "never" : "false"));
			}
			printf("\n");
		}
	}

exit_search:
	rv = pkcs_C_FindObjectsFinal(hSession);
	if (rv != CKR_OK) {
		fprintf(stderr, "C_FindObjectsFinal: Error = 0x%.8lX\n", rv);
		error = 1;
	}

exit_session:
	pk11_return_session(&pctx);
	(void)pk11_finalize();

	exit(error);
}