source: MondoRescue/branches/stable/mindi-busybox/sysklogd/logger.c@ 1842

/* vi: set sw=4 ts=4: */
/*
 * Mini logger implementation for busybox
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

#if !defined CONFIG_SYSLOGD

#define SYSLOG_NAMES
#include <sys/syslog.h>

#else
#include <sys/syslog.h>
#  ifndef __dietlibc__
    /* We have to do this since the header file defines static
     * structures.  Argh.... bad libc, bad, bad...
     */
    typedef struct _code {
        char *c_name;
        int c_val;
    } CODE;
    extern CODE prioritynames[];
    extern CODE facilitynames[];
#  endif
#endif

/* Decode a symbolic name to a numeric value
 * this function is based on code
 * Copyright (c) 1983, 1993
 * The Regents of the University of California.  All rights reserved.
 *
 * Original copyright notice is retained at the end of this file.
 */
static int decode(char *name, CODE * codetab)
{
    CODE *c;

    if (isdigit(*name))
        return atoi(name);
    for (c = codetab; c->c_name; c++) {
        if (!strcasecmp(name, c->c_name)) {
            return c->c_val;
        }
    }

    return -1;
}

/* Decode a symbolic name to a numeric value
 * this function is based on code
 * Copyright (c) 1983, 1993
 * The Regents of the University of California.  All rights reserved.
 *
 * Original copyright notice is retained at the end of this file.
 */
static int pencode(char *s)
{
    char *save;
    int lev, fac = LOG_USER;

    for (save = s; *s && *s != '.'; ++s)
        ;
    if (*s) {
        *s = '\0';
        fac = decode(save, facilitynames);
        if (fac < 0)
            bb_error_msg_and_die("unknown %s name: %s", "facility", save);
        *s++ = '.';
    } else {
        s = save;
    }
    lev = decode(s, prioritynames);
    if (lev < 0)
        bb_error_msg_and_die("unknown %s name: %s", "priority", save);
    return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
}


int logger_main(int argc, char **argv);
int logger_main(int argc, char **argv)
{
    char *str_p, *str_t;
    int i = 0;
    char name[80];

    /* Fill out the name string early (may be overwritten later) */
    bb_getpwuid(name, sizeof(name), geteuid());
    str_t = name;

    /* Parse any options */
    getopt32(argv, "p:st:", &str_p, &str_t);

    if (option_mask32 & 0x2) /* -s */
        i |= LOG_PERROR;
    //if (option_mask32 & 0x4) /* -t */
    openlog(str_t, i, 0);
    i = LOG_USER | LOG_NOTICE;
    if (option_mask32 & 0x1) /* -p */
        i = pencode(str_p);

    argc -= optind;
    argv += optind;
    if (!argc) {
#define strbuf bb_common_bufsiz1
        while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
            if (strbuf[0]
             && NOT_LONE_CHAR(strbuf, '\n')
            ) {
                /* Neither "" nor "\n" */
                syslog(i, "%s", strbuf);
            }
        }
    } else {
        char *message = NULL;
        int len = 0;
        int pos = 0;
        do {
            len += strlen(*argv) + 1;
            message = xrealloc(message, len + 1);
            sprintf(message + pos, " %s", *argv),
            pos = len;
        } while (*++argv);
        syslog(i, "%s", message + 1); /* skip leading " " */
    }

    closelog();
    return EXIT_SUCCESS;
}


/*-
 * Copyright (c) 1983, 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This is the original license statement for the decode and pencode functions.
 *
 * 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.
 *
 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
 *      ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
 *
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 */