/*

 * Copyright (c) 2018 Frank Morgner <frankmorgner@gmail.com>

 *

 * Feel free to copy all of the code as needed.

 */

#include <libp11.h>

static void error_queue(const char *name);

int main(int argc, char *argv[])

{

	PKCS11_CTX *ctx;

	PKCS11_SLOT *slots, *slot;

	PKCS11_CERT *certs;

	int rc = 0, token_found = 0;

	unsigned int nslots;

	if (argc < 2) {

		fprintf(stderr,

			"usage: %s /usr/lib/opensc-pkcs11.so\n",

			argv[0]);

		return 1;

	}

	ctx = PKCS11_CTX_new();

	error_queue("PKCS11_CTX_new");

	rc = PKCS11_CTX_load(ctx, argv[1]);

	error_queue("PKCS11_CTX_load");

	if (rc) {

		fprintf(stderr, "loading pkcs11 engine failed: %s\n",

			ERR_reason_error_string(ERR_get_error()));

		goto nolib;

	}

	/* get information on all slots */

	rc = PKCS11_enumerate_slots(ctx, &slots, &nslots);

	error_queue("PKCS11_enumerate_slots");

	if (rc < 0) {

		fprintf(stderr, "no slots available\n");

		goto noslots;

	}

	/* get slots with a token */

	for (slot = PKCS11_find_token(ctx, slots, nslots);

			slot != NULL;

			slot = PKCS11_find_next_token(ctx, slots, nslots, slot)) {

		if (token_found)

			printf("\n");

		else

			token_found = 1;

		printf("Slot manufacturer......: %s\n", slot->manufacturer);

		printf("Slot description.......: %s\n", slot->description);

		printf("Slot token label.......: %s\n", slot->token->label);

		printf("Slot token manufacturer: %s\n", slot->token->manufacturer);

		printf("Slot token model.......: %s\n", slot->token->model);

		printf("Slot token serialnr....: %s\n", slot->token->serialnr);

	}

	if (!token_found) {

		error_queue("PKCS11_find_token");

		fprintf(stderr, "no token available\n");

		goto notoken;

	}

	PKCS11_release_all_slots(ctx, slots, nslots);

	PKCS11_CTX_unload(ctx);

	PKCS11_CTX_free(ctx);

	printf("Cleanup complete\n");

	return 0;

notoken:

	PKCS11_release_all_slots(ctx, slots, nslots);

noslots:

	PKCS11_CTX_unload(ctx);

nolib:

	PKCS11_CTX_free(ctx);

	printf("listing failed.\n");

	return 1;

}

static void error_queue(const char *name)

{

	if (ERR_peek_last_error()) {

		fprintf(stderr, "%s generated errors:\n", name);

		ERR_print_errors_fp(stderr);

	}

}

/* vim: set noexpandtab: */