/*
 * 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.
 */


/* unix system includes */

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <locale.h>
#include <errno.h>
#include <sys/param.h>
#include <instzones_api.h>

/*
 * consolidation pkg command library includes
 */

#include "pkglib.h"

/*
 * local pkg command library includes
 */

#include "install.h"
#include "libinst.h"
#include "libadm.h"
#include "messages.h"

/* Should be defined by cc -D */
#if     !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif

/* local static data */

static boolean_t        verbose = B_FALSE;

/*
 * Name:        log_msg
 * Description: Outputs messages to logging facility.
 * Scope:       public
 * Arguments:   a_type - the severity of the message
 *              a_format - the printf format, plus its arguments
 * Returns:     none
 */

/*PRINTFLIKE2*/
void
log_msg(LogMsgType a_type, const char *a_format, ...)
{
        FILE    *out;
        char    *rstr = (char *)NULL;
        char    bfr[1];
        char    *prefix;
        size_t  vres = 0;
        va_list ap;
        char    *p = get_prog_name();

        /* process message based on type */

        switch (a_type) {
        case LOG_MSG_ERR:
        default:        /* treat unknown type as LOG_MSG_ERR */
                out = stderr;
                prefix = MSG_LOG_ERROR;
                break;
        case LOG_MSG_WRN:       /* warning message */
                out = stderr;
                prefix = MSG_LOG_WARNING;
                break;
        case LOG_MSG_INFO:      /* information message */
                out = stdout;
                prefix = NULL;
                break;
        case LOG_MSG_DEBUG:     /* debugging message */
                if (!log_get_verbose()) {
                        /* no debug messages if not verbose mode */
                        return;
                }

                out = stderr;
                prefix = NULL;

                /* output debug prefix to match echoDebug() format */

                (void) fprintf(stderr, "# [%6d %3d", getpid(), getzoneid());

                if ((p != (char *)NULL) && (*p != '\0')) {
                        fprintf(stderr, " %-11s", p);
                }

                (void) fprintf(stderr, "] ");
                break;
        }

        /* output prefix if specified */

        if (prefix != NULL) {
                (void) fprintf(out, "%s: ", prefix);
        }

        /* determine size of the message in bytes */

        va_start(ap, a_format);
        vres = vsnprintf(bfr, 1, a_format, ap);
        va_end(ap);

        /* allocate storage to hold the message */

        rstr = (char *)malloc(vres+2);

        /* generate the results of the printf conversion */

        va_start(ap, a_format);
        vres = vsnprintf(rstr, vres+1, a_format, ap);
        va_end(ap);

        /* output formatted message to appropriate destination */

        if (fprintf(out, "%s\n", rstr) < 0) {
                if (out != stderr) {
                        /*
                         * nothing output, try stderr as a
                         * last resort
                         */
                        (void) fprintf(stderr, ERR_LOG_FAIL, a_format);
                }
        }

        /* free temporary message storage */

        free(rstr);
}

/*
 * Name:        set_verbose
 * Description: Turns on verbose output
 * Scope:       public
 * Arguments:   verbose = B_TRUE indicates verbose mode
 * Returns:     none
 */

void
log_set_verbose(boolean_t setting)
{
        verbose = setting;
}

/*
 * Name:        get_verbose
 * Description: Returns whether or not to output verbose messages
 * Scope:       public
 * Arguments:   none
 * Returns:     B_TRUE - verbose messages should be output
 */

boolean_t
log_get_verbose()
{
        return (verbose);
}