/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <sys/types.h>
#include <unistd.h>
#include <wchar.h>
#include <libintl.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <assert.h>
#include <getopt.h>
#include <cmdparse.h>
#include <libstmf.h>
#include <signal.h>
#include <pthread.h>
#include <locale.h>

static char *getExecBasename(char *);
static int setLuStandbyFunc(int, char **, cmdOptions_t *, void *);
static int disableAluaFunc(int, char **, cmdOptions_t *, void *);
static int enableAluaFunc(int, char **, cmdOptions_t *, void *);

#define OPERANDSTRING_LU            "LU-name"
#define OPERANDSTRING_NODE_ID       "node ID (0 or 1)"

#define VERSION_STRING_MAJOR        "1"
#define VERSION_STRING_MINOR        "0"
#define VERSION_STRING_MAX_LEN      10

#define GUID_INPUT                  32

/* tables set up based on cmdparse instructions */

/* add new options here */
optionTbl_t longOptions[] = {
        {NULL, 0, 0, 0}
};

/*
 * Add new subcommands here
 */
subCommandProps_t subcommands[] = {
        {"standby", setLuStandbyFunc, NULL, NULL, NULL,
                OPERAND_MANDATORY_SINGLE, OPERANDSTRING_LU, NULL},
        {"disable", disableAluaFunc, NULL, NULL, NULL,
                OPERAND_NONE, NULL, NULL},
        {"enable", enableAluaFunc, NULL, NULL, NULL,
                OPERAND_MANDATORY_SINGLE, OPERANDSTRING_NODE_ID, NULL},
        {NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL}
};

/* globals */
char *cmdName;

/*
 * setLuStandbyFunc
 *
 * Purpose: set lu to standby
 *
 */
/*ARGSUSED*/
static int
setLuStandbyFunc(int operandLen, char *operands[], cmdOptions_t *options,
    void *args)
{
        char sGuid[GUID_INPUT + 1];
        stmfGuid inGuid;
        unsigned int guid[sizeof (stmfGuid)];
        int i;
        int ret = 0;

        if (strlen(operands[0]) != GUID_INPUT) {
                (void) fprintf(stderr, "%s: %s: %s %d %s\n", cmdName,
                    operands[0], gettext("must be"), GUID_INPUT,
                    gettext("hexadecimal digits long"));
                return (1);
        }

        bcopy(operands[0], sGuid, GUID_INPUT);

        for (i = 0; i < GUID_INPUT; i++)
                sGuid[i] = tolower(sGuid[i]);
        sGuid[i] = 0;

        (void) sscanf(sGuid, "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
            &guid[0], &guid[1], &guid[2], &guid[3], &guid[4], &guid[5],
            &guid[6], &guid[7], &guid[8], &guid[9], &guid[10], &guid[11],
            &guid[12], &guid[13], &guid[14], &guid[15]);

        for (i = 0; i < sizeof (stmfGuid); i++) {
                inGuid.guid[i] = guid[i];
        }

        ret = stmfLuStandby(&inGuid);
        if (ret != STMF_STATUS_SUCCESS) {
                switch (ret) {
                        case STMF_ERROR_PERM:
                                (void) fprintf(stderr, "%s: %s\n", cmdName,
                                    gettext("permission denied"));
                                break;
                        case STMF_ERROR_SERVICE_NOT_FOUND:
                                (void) fprintf(stderr, "%s: %s\n", cmdName,
                                    gettext("STMF service not found"));
                                break;
                        case STMF_ERROR_NOT_FOUND:
                                (void) fprintf(stderr, "%s: %s: %s\n", cmdName,
                                    operands[0], gettext("not found"));
                                break;
                        case STMF_ERROR_SERVICE_DATA_VERSION:
                                (void) fprintf(stderr, "%s: %s\n", cmdName,
                                    gettext("STMF service version incorrect"));
                                break;
                        default:
                                (void) fprintf(stderr, "%s: %s\n", cmdName,
                                    gettext("unknown error"));
                                break;
                }
        }
        return (ret);
}

/*
 * disableAluaFunc
 *
 * Purpose: disable alua mode
 *
 */
/*ARGSUSED*/
static int
disableAluaFunc(int operandLen, char *operands[], cmdOptions_t *options,
    void *args)
{
        return (stmfSetAluaState(B_FALSE, 0));
}

/*
 * enableAluaFunc
 *
 * Purpose: enable alua mode
 *
 */
/*ARGSUSED*/
static int
enableAluaFunc(int operandLen, char *operands[], cmdOptions_t *options,
    void *args)
{
        uint8_t node_id = 0;
        if (operands[0][0] == '1') {
                node_id = 1;
        }
        return (stmfSetAluaState(B_TRUE, node_id));
}


/*
 * input:
 *  execFullName - exec name of program (argv[0])
 *
 *  copied from usr/src/cmd/zoneadm/zoneadm.c in OS/Net
 *  (changed name to lowerCamelCase to keep consistent with this file)
 *
 * Returns:
 *  command name portion of execFullName
 */
static char *
getExecBasename(char *execFullname)
{
        char *lastSlash, *execBasename;

        /* guard against '/' at end of command invocation */
        for (;;) {
                lastSlash = strrchr(execFullname, '/');
                if (lastSlash == NULL) {
                        execBasename = execFullname;
                        break;
                } else {
                        execBasename = lastSlash + 1;
                        if (*execBasename == '\0') {
                                *lastSlash = '\0';
                                continue;
                        }
                        break;
                }
        }
        return (execBasename);
}

int
main(int argc, char *argv[])
{
        synTables_t synTables;
        char versionString[VERSION_STRING_MAX_LEN];
        int ret;
        int funcRet;
        void *subcommandArgs = NULL;

        (void) setlocale(LC_ALL, "");
        (void) textdomain(TEXT_DOMAIN);
        /* set global command name */
        cmdName = getExecBasename(argv[0]);

        (void) snprintf(versionString, VERSION_STRING_MAX_LEN, "%s.%s",
            VERSION_STRING_MAJOR, VERSION_STRING_MINOR);
        synTables.versionString = versionString;
        synTables.longOptionTbl = &longOptions[0];
        synTables.subCommandPropsTbl = &subcommands[0];

        ret = cmdParse(argc, argv, synTables, subcommandArgs, &funcRet);
        if (ret != 0) {
                return (ret);
        }

        return (funcRet);
} /* end main */